@article{ASNSP_1934_2_3_2_183_0,
     author = {McShane, Edward James},
     title = {Existence theorems for ordinary problems of the calculus of variations (part {I)}},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {183--211},
     publisher = {Scuola normale superiore},
     volume = {Ser. 2, 3},
     number = {2},
     year = {1934},
     zbl = {0009.02302},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1934_2_3_2_183_0/}
}