[1] Alves C O, Corrˆea F J S A. On the existence of positive solution for a class of singular systems involving quasilinear operators. Appl Math Comput, 2007, 185: 727–736

[2] Chen C. On positive weak solutions for a class of quasilinear elliptic systems. Nonlinear Anal, 2005, 62: 751–756

[3] Chhetri M, Hai D D, Shivaji R. On positive solutions for a class of p-Laplacian semiposition systems. Disc Contin Dyn Syst, 2003, 9(4): 1063–1071

[4] Cl´ement P, Fleckinger J, Mitidieri E, de Thelin F. Existence of positive solutions for a nonvariational quasilinear elliptic system. J Differential Equations, 2000, 166: 455–477.

[5] El Manouni S, Perera K, Shivaji R. On singular quasimonotone (p, q)-Laplacian systems. Proc Roy Soc Edinburgh Sect A, 2012, 142: 585–594

[6] Ghergu M. Lane-Emden systems with negative exponents. J Functional Anal, 2010, 258: 3295–3318

[7] Giacomoni J, Hernandez J, Moussaoui A. Quasilinear and singular systems: the cooperative case, Contemporary Math, 540(2011). Amer Math Soc, Providence, RI, 79–94

[8] Giacomoni J, Hernandez J, Sauvy P. Quasilinear and singular elliptic systems. Advances Nonl Anal, 2012, 540: 79–94

[9] J. Giacomoni, I. Schindler and P. Takac, Sobolev versus H¨older local minimizers and existence of multiple solutions for a singular quasilinear equation. Ann Sc Norm Super Pisa Cl Sci, 2007, 6(5): 117–158

[10] Hernandez J, Mancebo F J, Vega J M. Positive solutions for singular semilinear elliptic systems. Adv Differential Equations, 2008, 13: 857–880

[11] Kim E H. Singular Gierer-Meinhardt systems of elliptic boundary value problems. J Math Anal Appl, 2005, 308: 1–10

[12] Lieberman G M. Boundary regularity for solutions of degenerate elliptic equations. Nonlinear Anal, 1988, 12: 1203–1219

[13] Motreanu D, Motreanu V V, Papageorgiou N S. Multiple constant sign and nodal solutions for Nonlinear Neumann eigenvalue problems. Ann Sc Norm Super Pisa Cl Sci, 2011, 10(5): 729–755

[14] Motreanu D, Moussaoui A. Existence and boundedness of solutions for a singular cooperative quasilinear elliptic system. Complex Var Elliptic Equations, 2013, DOI: 10.1080/17476933.2012.744404

[15] V´azquez J L. A strong maximum principle for some quasilinear elliptic equations. Appl Math Optim, 1984, 12: 191–202

[16] Wu M, Yang Z. Existence of boundary blow-up solutions for a class of quasilinear elliptic systems with critical case. Appl Math Comput, 2008, 198: 574–581

[17] Yang Z, Wu M. Existence of boundary blow-up solutions for a class of quasilinear elliptic systems for the subcritical case. Commun Pure Appl Anal, 2007, 6: 531–540

[18] Zeidler E. Nonlinear functional analysis and its applications. I. Fixed-point theorems. New York: Springer-Verlag, 1986