. AUTHOR : Kazakov V. 1.     Modulation Acoustic Method of Crack Location . V.Kazakov (Institute of Applied Physics of RAS, Nizhny Novgorod, Russia); P.A.Johnson (Los Alamos National Laboratory,   Los Alamos, NM, USA) . 2.     Stroboscopic Pulse Method of Nonlinear Parameters Measurements . V.Kazakov (Institute of Applied Physics RAS, Nizhny Novgorod, Russia) .