@article{10_4064_sm_9_1_166_180,
     author = {M. Wojdys{\l}awski},
     title = {Sur les r\'etractes par d\'eformation des coupures de la surface sph\'erique},
     journal = {Studia Mathematica},
     pages = {166--180},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {1940},
     doi = {10.4064/sm-9-1-166-180},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-9-1-166-180/}
}