@article {Шопова1989,
	title = {Фонетико-фонологични грешки при възприемането на българската вокална система от испаноговорещи студенти},
	journal = {Съпоставително езикознание / Сопоставительное языкознание / Contrastive linguistics},
	volume = {14},
	year = {1989},
	pages = {17{\textendash}23},
	abstract = {It is the purpose of this paper to analyse what is considered to be the most typical phonetic and phonological errors made by students whose mother tongue is Spanish while reproducing the Bulgarian vocal system. The study is based on a corpus of 3500 typical errors. It indicates that the Bulgarian interlanguage of the Spanish speaking students under research has some specific characteristics mainly due to differences between the vocal systems that have been juxtaposed. The conclusions drawn are expected to assist the process of correcting phonetic usage and practice.},
	author = {Шопова, Йорданка and Велева, Маргарита}
}
@article {Велева1986,
	title = {Фонетико-фонологични грешки при възприемането на българската консонантна система от носители на испанския език},
	journal = {Съпоставително езикознание / Сопоставительное языкознание / Contrastive linguistics},
	volume = {11},
	year = {1986},
	pages = {21{\textendash}30},
	abstract = {This is an examination of the most typical phonetic and phonological errors observed in the interlingual consonantal system of the Spanish speaking learners of Bulgarian. The study is based on a corpus of 7500 errors. The analysis shows that the Spanish Bulgarian interlanguage has specific features of its own resulting mainly from the substantial differences between the consonantal systems of the two languages. The conclusions drawn will help to choose the right teaching strategy in corrective phonetics courses.},
	author = {Велева, Маргарита and Шопова, Йорданка}
}
