@Article{ 2011:shemyakova:xy:invs,
	title = "\<i\>X\</i\>- and \<i\>Y\</i\>-invariants of partial differential operators in the plane",
	author = "E. Shemyakova",
	publisher = "MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.",
	journal = "Programming and Computer Software",
	pages = "192--196",
	volume = "37",
	year = "2011",
	issn = "0361-7688",
	note = "10.1134/S0361768811020095",
	url = "http://dx.doi.org/10.1134/S0361768811020095",
	affiliation = "Dorodnicyn Computing Center, Russian Academy of Sciences, ul. Vavilova 40, Moscow, 119333 Russia",
	issue = "4",
	keyword = "Computer Science"
}