@article{AIHPC_2018__35_7_1757_0,
     author = {Sirakov, Boyan and Tomei, Carlos and Zaccur, Andr\'e},
     title = {Results of {Ambrosetti{\textendash}Prodi} type for non-selfadjoint elliptic operators},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {1757--1772},
     publisher = {Elsevier},
     volume = {35},
     number = {7},
     year = {2018},
     doi = {10.1016/j.anihpc.2018.03.001},
     mrnumber = {3906855},
     zbl = {06976930},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2018.03.001/}
}