@article{EJDE_2002__2002__a229,
     author = {El Hamidi,  Abdallah and Laptev,  Gennady G.},
     title = {Nonexistence of solutions to systems of higher-order semilinear inequalities in cone-like domains},
     journal = {Electronic journal of differential equations},
     year = {2002},
     volume = {2002},
     zbl = {1044.35114},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a229/}
}