@article{article3da1fc00,
title   = {Positive solutions for an elliptic equation in an annulus with a superlinear nonlinearity with zeros},
author = {Iturriaga, Leonelo and Massa, Eugenio Tommaso and Sánchez, Justino and Ubilla, Pedro},
year = {2014},
doi = {10.1002/mana.201100285},
journal   = {Mathematische Nachrichten}
}