- De Figueiredo , D.G. and Mitidieri , E. 1990 . Maximum principles for co-operative elliptic systems , Vol. I , 49 – 52 . C.R. Acad. Sci. Paris, t. 310, Sér .
- Protter , M.H. and Weinberger , H.F. 1967 . Maximum principles in differential equations , Prentice Hall .
- Walter , W.A. 1989 . theorem on elliptic differential inequalities with an application to gradient bounds. , 293 – 299 . Verlag : Math. Z. 200 .
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