MathSciNet bibliographic data MR1795992 35J60 (35J15 35K55 60J60 60J80) Engländer, János Criteria for the existence of positive solutions to the equation $\rho(x)\Delta u=u^2$$\rho(x)\Delta u=u^2$ in ${\bf R}^d$${\bf R}^d$ for all $d\ge1$$d\ge1$—a new probabilistic approach. Positivity 4 (2000), no. 4, 327–337. Article

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