1. [1] Brezis, Haïm Comments on two notes by L. Ma and X. Xu, C. R. Math. Acad. Sci. Paris, Volume 349 (2011) no. 5-6, pp. 269-271
2. [2] Brézis, Haïm; Merle, Frank; Rivière, Tristan Quantization effects for -Δu=u(1-|u| 2 ) in ℝ 2 , Arch. Ration. Mech. Anal., Volume 126 (1994) no. 1, pp. 35-58
3. [3] Caristi, Gabriella; D’Ambrosio, Lorenzo; Mitidieri, Enzo Representation formulae for solutions to some classes of higher order systems and related Liouville theorems, Milan J. Math., Volume 76 (2008), pp. 27-67
4. [4] Hervé, Rose-Marie; Hervé, Michel Quelques proprietes des solutions de l’equation de Ginzburg-Landau sur un ouvert de ℝ 2 , Potential Anal., Volume 5 (1996) no. 6, pp. 591-609
5. [5] Lei, Yutian; Li, Congming Sharp criteria of Liouville type for some nonlinear systems, Discrete Contin. Dyn. Syst., Volume 36 (2016) no. 6, pp. 3277-3315