@article{10_4064_ap_27_3_293_304,
     author = {Ivan Kol\'a\v{r}},
     title = {On the absolute differentiation of geometric object fields},
     journal = {Annales Polonici Mathematici},
     pages = {293--304},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1972},
     doi = {10.4064/ap-27-3-293-304},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-27-3-293-304/}
}