TY JOUR TI Syntactic Maturity in Teenagers with Severe Speech Impairments KW syntactic competence KW grammar KW correction resistance KW general speech underdevelopment KW severe speech impairments KW adapted basic curriculum KW syntactic constructions JO Bulletin of Kemerovo State University. Series: Humanities and Social Sciences AU El'gart, E.A. AU Sergeeva, A.I. PY 2023 IS 7 PB Kemerovo State University