@article{10_4064_ap_57_3_253_263,
     author = {Ludwik Dru\.zkowski and Halszka Tutaj},
     title = {Differential conditions to verify the {Jacobian} {Conjecture}},
     journal = {Annales Polonici Mathematici},
     pages = {253--263},
     publisher = {mathdoc},
     volume = {57},
     number = {3},
     year = {1992},
     doi = {10.4064/ap-57-3-253-263},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-57-3-253-263/}
}