@article{AFST_1986-1987_5_8_3_349_0,
     author = {Okassa, Eug\`ene},
     title = {Prolongement des champs de vecteurs \`a des vari\'et\'es de points proches},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {349--366},
     publisher = {Universit\'e Paul Sabatier},
     address = {Toulouse},
     volume = {5e s{\'e}rie, 8},
     number = {3},
     year = {1986-1987},
     mrnumber = {948759},
     zbl = {0663.53059},
     language = {fr},
     url = {http://www.numdam.org/item/AFST_1986-1987_5_8_3_349_0/}
}