@article{1181072346,
author = {Guessab, Allal and Milovanovi\'c, Gradimir V.},
title = {Extremal Problems of Markov's Type for Some Differential Operators},
journal = {Rocky Mountain J. Math.},
volume = {24},
number = {4},
year = {1994},
pages = { 1431-1438},
language = {en},
url = {http://dml.mathdoc.fr/item/1181072346}
}
Guessab, Allal; Milovanović, Gradimir V. Extremal Problems of Markov's Type for Some Differential Operators. Rocky Mountain J. Math., Tome 24 (1994) no. 4, pp. 1431-1438. http://gdmltest.u-ga.fr/item/1181072346/