-
Kiselev A.P., “Plane waves with a transverse structure in an arbitrarily anisotropic elastic medium”, Doklady Physics, 53:1 (2008),
48–50 
-
S.V. Goldin, A.A. Duchkov, International Seminar. Day on Diffraction. Proceedings (IEEE Cat. No.99EX367), 1999,
32