TY - JOUR AU - V. I. Mironenko TI - On periodic solutions of Riccati equations JO - Problemy fiziki, matematiki i tehniki PY - 2015 SP - 62 EP - 64 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PFMT_2015_2_a9/ LA - ru ID - PFMT_2015_2_a9 ER -