Zbigniew Suchorab, Danuta Barnat-Hunek, Małgorzata Franus, Grzegorz Łagód and Zbyšek Pavlík
 Życzyńska A. Eksploat Niezawodn. 2013; 15(4):458-462. http://ein.org.pl/sites/default/files/2013-04-25.pdf .
 Ickiewicz I. Ecol Chem Eng S. 2013;20(4):805-816. DOI: 10.2478/eces-2013-0056.
 Directive 2006/32/EC of the European Parliament and of the Council of 5 April 2006 on energy end-use efficiency and energy services and repealing Council Directive 93/76/EEC.2006. https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:114:0064:0085:EN:PDF .
 Central Statistical Office. Energy Efficiency in the Years
space – a problem of current urbanization). Calitatea vieții , 20 (3-4), pp. 249-270.
Choromides, C., 2017. Analysis of the investment activity in South and Central Eastern Europe. A comparative analysis of the corporate growth model. J. of Urban and Regional Analysis , 10(1), pp. 5-32.
Colusca, S.E., Alpopi, C., 2011. The quality of Bucharest’s green spaces. Theoretical and Empirical Researches. Urban Management , 6 (4), pp. 45-59.
Csachová, S., 2016. Inner boundary reform in Košice – the most fragmentated city in Slovakia. Geografica Pannonica
of sewage sludge. Desalin Water Treat. 2014;52:3761-3766. DOI: 10.1080/19443994.2014.884750.
 Wang J, Xue Q. Study on microscopic characteristics and analysis methods of municipal sludge. EJGE. 2010;15:441-448. http://www.ejge.com/ .
 Tavazzi S, Locoro G, Comero S, Sobiecka E, Loos R, Gans O, et al. Occurrence and levels of selected compounds in European sewage sludge samples. Results of a Pan-European Screening Exercise (FATE SEES). JRC Scientific and Policy Reports. European Commission. Joint Research Centre. Institute for Environment and
 Rodziewicz T, Teneta J, Zaremba A, Wacławek M. Analysis of solar energy resources in Southern Poland for photovoltaic applications. Ecol Chem Eng S. 2012;20(1):177-198. DOI: 10.2478/eces-2013-0014.
 Królczyk J, Rezwiakow A, Tukiendorf M. Mixing of biomass and coal in a static mixer as an example of technological solutions involving implementation of renewable energy. Ecol Chem Eng S. 2014;21(4):685-696. DOI: 10.1515/eces-2014-0050.
 Directive of the European Parliament and Council Directive 2009/28/EC of 23 April 2009. On
Tadeusz Rodziewicz, Janusz Teneta, Aleksander Zaremba and Maria Wacławek
Opolskiego. Proc. XIII CentralEuropean Conference ECOpole’04. 2004;385-391 (in Polish).
 Zaremba A, Graca B, Rodziewicz T, Wacławek M. Analiza pracy stacji PV Uniwersytetu Opolskiego w latach 1998-2005. Proc. XIV CentralEuropean Conference ECOpole’05 2005;493-498 (in Polish).
 Page J, Albuisson M, Wald L. The European solar radiation atlas: a valuable digital tool. Solar Energy. 2001;71:81-83.
 Rodziewicz T, Zaremba A, Wacławek M. Use of Clearness Indexes for Prediction of the Performance of PV Modules. Proc. 24th
Ágnes Bálint, Sándor Hoffmann, Attila Anton, Tibor Szili-Kovács and György Heltai
According to global inventories the agricultural field production contributes in a significant measure to increase of concentration of greenhouse gases (CO2, N2O, CH4) in the atmosphere, however their estimated data of emissions of soil origin differ significantly. Particularly estimates on nitrogen-oxides emissions show a great temporal and spatial variability while their formations in microbial processes are strongly influenced by biogeochemical and physical properties of the soil (eg microbial species, soil texture, soil water, pH, redox-potential and nutrient status) and land use management through the impact of the application of natural and synthetic fertilisers, tillage, irrigation, compaction, planting and harvesting. The different monitoring systems and inventory models were developed mostly from atmospheric chemistry point of view and little comprehensive data exist on the processes related to GHG emissions and their productions in agricultural soils under ecological conditions of Central Europe. This paper presents the new results of a project aimed elaboration of an experimental system suitable for studying relationships between the production and emission of greenhouse gases and plant nutrition supply in agricultural soils under Hungarian ecological conditions. The system was based on a long-term fertilisation field experiment. Mesocosm size pot experiments were conducted with soils originating from differently treated plots. The production of CO2 and N2O was followed during the vegetation period in gas traps built in 20 cm depth. Undisturbed soil columns were prepared from the untreated side parcels of the field experiment and the production of CO2 and N2O was studied at 20, 40 and 60 cm depth. A series of laboratory microcosm experiments were performed to clarify the microbial and environmental effects influencing the gas production in soils. The CO2 and N2O were determined by gas chromatography. The NOx was detected by chemiluminescence method in headspace of microcosms. In the mesocosm and soil columns experiments influence of plant nutrition methods and environmental factors was successfully clarified on seasonal dynamics and depth profile on CO2 and N2O productions. The database developed is suitable for estimating CO2 and N2O emissions from agricultural soils.
Tadeusz Rodziewicz, Aleksander Zaremba and Maria Wacławek
;71:81-83. DOI: 10.1016/S0038-092X(00)00157-2.
 Suri M, Dunlop ED, Jones AR, Hofierka J. GIS-Based Inventory of the Potential Photovoltaic Output in Central and Eastern Europe. Proc 18th Eur Photovolt Solar En Conf Exhibition Sci, Technol Application. Rome: 2002. https://www.researchgate.net/publication/237332062_gis-based_inventory_of_the_potential_photovoltaic_output_in_central_and_eastern_europe .
 Kasten F, Young A. Revised optical air mass tables and approximation formula. Appl Optics. 1989;28:4735-8. DOI: 10.1364/AO.28.004735.
 Palz W. The
Andrzej Mazur, Jerzy Bartnicki and Jerzy Zwoździak
] Strużewska J, Kamiński JW. Impact of urban parameterization on high resolution air quality forecast with the GEM - AQ model. Atmos Chem Phys. 2012;12:10387-10404. DOI:10.5194/acp-12-10387-2012.
 Juda-Rezler K, Reizer M, Huszar P, Krüger BC, Zanis P, Syrakov D, et al. Modelling the effects of climate change on air quality over Central and Eastern Europe: concept, evaluation and projections. Clim Res. 2012;53:179-203. DOI: 10.3354/cr01072.
 Huszar P, Juda-Rezler K, Halenka T, Chervenkov H, Syrakov D, Krüger BC, et al. Effects of
of water quality of river Ravi at Madhopur (India).Global J Environ Sci. 2009;8(1):49-57.
 Hurley T, Sadiq R, Mazumder A. Adaptation and evaluation of the Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI) for use as an effective tool to characterize drinking source water quality. Water Res. 2012;46(11):3544-3552. DOI: 10.1016/j.watres.2012.03.061.
 Kahler-Royer CA. A water quality index devised for the Des Moines River in Central IOWA. IOWA State University. Master of Science thesis - Supervised by
street canyons: wind tunnel and computational data. J Wind Eng Industrial Aerodyn. 2003;91:1141-1154. DOI: 10.1016/S0167-6105(03)00056-4.
 Vogt R, Christen A, Rotach MW, Roth M, Satyanarayana ANV. Temporal dynamics of CO 2 fluxes and profiles over a CentralEuropean city. Theoret Appl Climatol. 2006;84(1-3):117-126. DOI: 0.1007/s00704-005-0149-9.
 Matese A, Gioli B, Vaccari FP, Zaldei A, Miglietta F. Carbon dioxide emissions of the city center of Firenze, Italy: Measurement, evaluation, and source partitioning. J Appl Meteor Climatol. 2009