@article{KYB_1975__11_6_a1,
     author = {Mathur, Y. D. and Mitter, J.},
     title = {Some theorems on geometric measure of distortion},
     journal = {Kybernetika},
     pages = {--410},
     publisher = {mathdoc},
     volume = {11},
     number = {6},
     year = {1975},
     mrnumber = {0439418},
     zbl = {0336.94014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1975__11_6_a1/}
}