L. I. Slepyan, O. V. Tsareva, “Resonance phenomena in semibounded systems”, Dokl. Akad. Nauk SSSR, 301:2 (1988), 301–305; Dokl. Math., 33:7 (1988), 547–549
1987
2.
L. I. Slepyan, O. V. Tsareva, “Energy flux for the zero group velocity of a carrier wave”, Dokl. Akad. Nauk SSSR, 294:4 (1987), 818–822