%0 Journal Article %A MARENO, A. %T MAXIMUM PRINCIPLES FOR SOME HIGHER-ORDER SEMILINEAR ELLIPTIC EQUATIONS %J Glasgow mathematical journal %D 2011 %P 313-320 %V 53 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S001708951000073X/ %R 10.1017/S001708951000073X %F 10_1017_S001708951000073X