Lichtenberk, Frantisek. 1991. Semantic change and heterosemy in grammaticalization. Language 67. 475-509.
@article{lichtenberk1991,
author = {Lichtenberk, Frantisek},
journal = {Language},
key = {Lichtenberk 1991},
pages = {475-509},
title = {Semantic change and heterosemy in grammaticalization},
volume = {67},
year = {1991}
}