TY - JOUR AU - A. A. Ilyin TI - A~class of sharp inequalities for periodic functions. Addendum to the paper ``Smooth solutions of the Navier-Stokes equations'' by S.\,I.~Pokhozhaev JO - Sbornik. Mathematics PY - 2014 SP - 220 EP - 223 VL - 205 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2014_205_2_a2/ LA - en ID - SM_2014_205_2_a2 ER -