- Grammar, Comparative and general--Phonology (2)
- Language acquisition (2)
- Second language acquisition (2)
- Hungarian language--Error analysis (1)
- Hungarian language--Phonology, Comparative--Polish (1)
- Language and languages--Study and teaching (1)
- Metrical phonology (1)
- Polish language--Error analysis (1)
- Polish language--Phonology, Comparative--Hungarian (1)