[[1] D.R. Adams, A note on Riesz potentials . Duke Math., 42 (1975), 765- 778. ]Search in Google Scholar
[[2] D.R. Adams, Choquet integrals in potential theory, Publ. Mat. 42 (1998), 3-66. 10.5565/PUBLMAT_42198_01]Search in Google Scholar
[[3] L. Caffarelli, Elliptic second order equations, Rend. Sem. Mat. Fis. Milano 58 (1990), 253-284. 10.1007/BF02925245]Search in Google Scholar
[[4] L. Capogna, D. Danielli, S. Pauls and J. Tyson, An introduction to theHeisenberg group and the sub-Riemannian isoperimetric problem, Progr. Math., 259, Birkhauser, Basel, 2007. ]Search in Google Scholar
[[5] F. Chiarenza, M. Frasca, Morrey spaces and Hardy-Littlewood maximalfunction. Rend. Math. 7 (1987), 273-279. ]Search in Google Scholar
[[6] G. Di Fazio, D.K. Palagachev and M.A. Ragusa, Global Morrey regularityof strong solutions to the Dirichlet problem for elliptic equations withdiscontinuous coefficients, J. Funct. Anal. 166 (1999), 179-196. 10.1006/jfan.1999.3425]Search in Google Scholar
[[7] G.B. Folland, A fundamental solution for a subelliptic operator. Bull. Amer. Math. Soc. 79 (1973), No.2, 373-376. ]Search in Google Scholar
[[8] G.B. Folland, Subelliptic estimates and function spaces on nilpotent Liegroups. Ark. Mat. 13 (1975), 161-207. ]Search in Google Scholar
[[9] G.B. Folland and E.M. Stein, Hardy Spaces on Homogeneous Groups. Mathematical Notes Vol. 28, Princeton Univ. Press, Princeton, 1982. 10.1515/9780691222455]Search in Google Scholar
[[10] G. Furioli, C. Melzi, and A. Veneruso, Littlewood-Paley decompositionsand Besov spaces on Lie groups of polynomial growth. Math. Nachr. 279 (2006), no. 9-10, 1028-1040. ]Search in Google Scholar
[[11] N. Garofalo and E. Lanconelli, Frequency functions on the Heisenberggroup, the uncertainty principle and unique continuation. Atin. Inst. Fourier, Grenoble, 40 (1990), 313-356. 10.5802/aif.1215]Search in Google Scholar
[[12] V.S. Guliyev, Integral operators on function spaces on the homogeneousgroups and on domains in Rn, Doctor of Sciencies, Moscow, Mat. Inst. Steklova, (1994, Russian), 1-329. ]Search in Google Scholar
[[13] V. Guliev, Integral operators, function spaces and questions of approximationon Heisenberg groups. Baku- ELM, 1996. ]Search in Google Scholar
[[14] V.S. Guliyev, Function spaces, integral operators and two weighted inequalitieson homogeneous groups. Some applications. Baku, (1999, Russian), 1-332. ]Search in Google Scholar
[[15] V.S. Guliyev, Boundedness of the maximal, potential and singular operatorsin the generalized Morrey spaces, J. Inequal. Appl., 2009, Art. ID 503948, 20 pp. 10.1155/2009/503948]Search in Google Scholar
[[16] S. Giulini, Approximation and Besov spaces on stratified groups. Proc. Amer. Math. Soc. 96 (1986), No. 4, 569-578. ]Search in Google Scholar
[[17] D.S Jerison, The Dirichlet problem for the Kohn Laplacian on the Heisenberggroup. I., J. Funct. Anal., 43 (1981), 97142. 10.1016/0022-1236(81)90040-9]Search in Google Scholar
[[18] D.S Jerison, The Dirichlet problem for the Kohn Laplacian on the Heisenberggroup. II., J. Funct. Anal., 43 (1981), 224257. 10.1016/0022-1236(81)90031-8]Search in Google Scholar
[[19] A. Kufner, O. John and S. Fucik, Function Spaces, Noordhoff, Leyden, and Academia, Prague, 1977. ]Search in Google Scholar
[[20] A.L. Mazzucato, Besov-Morrey spaces: function space theory and applicationsto non-linear PDE, Trans. Amer. Math. Soc. 355 (2003), 1297- 1364. 10.1090/S0002-9947-02-03214-2]Search in Google Scholar
[[21] A. Meskhi, Maximal functions, potentials and singular integrals in grandMorrey spaces, Complex Var. Elliptic Eqns. (2011), 1-18. ]Search in Google Scholar
[[22] C.B. Morrey, On the solutions of quasi-linear elliptic partial differentialequations. Trans. Amer. Math. Soc. 43 (1938), 126-166. ]Search in Google Scholar
[[23] C. Perez, Two weighted norm inequalities for Riesz potentials and uniformLp-weighted Sobolev inequalities, Indiana Univ. Math. J. 39 (1990), 3144. ]Search in Google Scholar
[[24] A. Ruiz and L. Vega, Unique continuation for Schrödinger operators withpotential in Morrey spaces, Publ. Mat. 35 (1991), 291-298. 10.5565/PUBLMAT_35191_15]Search in Google Scholar
[[25] A. Ruiz and L. Vega, On local regularity of Schrödinger equations, Int. Math. Res. Notices 1993:1 (1993), 13-27. 10.1155/S1073792893000029]Search in Google Scholar