@article{BSMF_1909__37__51_0,
     author = {Goursat, E.},
     title = {Sur les surfaces \`a courbure constante n\'egative},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {51--58},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {37},
     year = {1909},
     doi = {10.24033/bsmf.835},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.835/}
}