@article{PMF_1949_47_1_a1,
     author = {Hoborski, A. and Go{\l}\k{a}b, St.},
     title = {Sur les lignes de courbure sp\'eciales},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {17--20},
     publisher = {mathdoc},
     volume = {47},
     number = {1},
     year = {1949},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PMF_1949_47_1_a1/}
}