@article {,
	title = {On the robustness of primitive words },
	journal = {Computaci{\'o}n y Sistemas. Revista Iberoamericana de Inteligencia Artificial},
	volume = {117},
	year = {2002},
	pages = {239-252},
	address = {Pa{\'\i}ses Bajos},
	abstract = {We investigate the effect on primitive words of point mutations (inserting or deleting symbols, substituting a symbol for another one), of morphisms, and of the operation of taking prefixes. Several ways of producing primitive words are obtained in this framework},
	keywords = {Deletion, Density, Insertion, Language, Morphism, Primitive, Word},
	issn = {0166-218X},
	doi = {10.1016/S0166-218X(00)00338-3},
	url = {http://www.ingentaconnect.com/content/els/0166218x/2002/00000117/00000001/art00338},
	author = {Gheorghe Paun and Nicolae Santean and Gabriel Thierrin and Sheng Yu}
}
