TY - JOUR AU - V. A. Il'in AU - E. I. Moiseev TI - Optimal boundary control of a string by an elastic force applied at one end, the other end being free JO - Differencialʹnye uravneniâ PY - 2005 SP - 105 EP - 115 VL - 41 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2005_41_1_a11/ LA - ru ID - DE_2005_41_1_a11 ER -