@article{ASNSP_1977_4_4_2_269_0,
     author = {Oleinik, O. A. and Yosifian, G. A.},
     title = {Boundary value problems for second order elliptic equations in unbounded domains and {Saint-Venant's} principle},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {269--290},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 4},
     number = {2},
     year = {1977},
     mrnumber = {481412},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1977_4_4_2_269_0/}
}