@article{10_4064_ap_58_1_19_28,
     author = {Andrzej Zajtz},
     title = {Some division theorems for vector fields},
     journal = {Annales Polonici Mathematici},
     pages = {19--28},
     publisher = {mathdoc},
     volume = {58},
     number = {1},
     year = {1993},
     doi = {10.4064/ap-58-1-19-28},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-58-1-19-28/}
}