BibTeX Export

@article{Authenticus:P-001-S19,
	title = {{On Pseudovarieties, Varieties of Languages, Filters of Congruences, Pseudoidentities and Related Topics}},
	author = {J ALMEIDA},
	doi = {10.1007/bf01190713},
	journal = {Algebra Universalis},
	number = {3},
	pages = {333-350},
	publisher = {Birkhauser Verlag Ag},
	type = {Article},
	volume = {27},
	year = {1990}
}