@article{SM_2008_199_9_a3,
     author = {V. I. Skalyga},
     title = {Analogue of {A.\,A.~Markov's} inequality for polynomials in two variables},
     journal = {Sbornik. Mathematics},
     pages = {1409--1420},
     publisher = {mathdoc},
     volume = {199},
     number = {9},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2008_199_9_a3/}
}