@article{SM_2008_199_10_a3,
     author = {P. I. Katsylo and D. A. Timashev},
     title = {Natural differential operations on manifolds: an algebraic},
     journal = {Sbornik. Mathematics},
     pages = {1481--1503},
     year = {2008},
     volume = {199},
     number = {10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2008_199_10_a3/}
}