Dmitry D. Belyaev. SPELLING OF PERSONAL VERBAL FORMS: NORM, USAGE, DYNAMICS
Trudy IRY RAS. 2021. № 3 (29), Pages. 54 - 62

N. V. Bogdanova-Beglarian. AGGRESSIVE COLLOQUIAL USAGE OR LANGUAGE NORM EVOLUTION? (INVITATION TO DISCUSSION)
Trudy IRY RAS. 2017. № 3 (13), Pages. 21 - 27