@article{invariants,
	author = "Shemyakova, E.",
	isbn_issn = "0302-9743",
	journal = "Lecture Notes in Comput. Sci.",
	language = "english",
	length = "9",
	pages = "360–369",
	refereed = "yes",
	title = "{A Full System of Invariants for Third-Order Linear Partial Differential Operators}",
	volume = "4120",
	year = "2006"
}