TY - JOUR AU - W. P. Odinets TI - The G\^ateaux differential, and uniqueness of the extension of linear operators with perservation of the norm JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1973 SP - 77 EP - 86 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1973_4_a9/ LA - ru ID - IVM_1973_4_a9 ER -