TY - JOUR AU - P. I. Plotnikov AU - L. N. Yungerman TI - Periodic solutions of a weakly nonlinear wave equation with an irrational relation of period to interval length JO - Differencialʹnye uravneniâ PY - 1988 SP - 1599 EP - 1607 VL - 24 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1988_24_9_a14/ LA - ru ID - DE_1988_24_9_a14 ER -