@article{10_4064_ap_51_1_249_254,
     author = {Gary H. Meisters and Czes{\l}aw Olech},
     title = {A {Jacobian} condition for injectivity of differentiable plane maps},
     journal = {Annales Polonici Mathematici},
     pages = {249--254},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {1990},
     doi = {10.4064/ap-51-1-249-254},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-51-1-249-254/}
}