@article{AUPO_1979_18_1_a11,
     author = {Jachanov\'a, Jaroslava},
     title = {Halfnets and partial $\frak J$-loops},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {117--134},
     year = {1979},
     volume = {18},
     number = {1},
     mrnumber = {0589853},
     zbl = {0438.20050},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1979_18_1_a11/}
}