\Bibitem{BukGav83} \by V.~I.~Bukreev, N.~V.~Gavrilov \paper An experimental study of internal solitary waves in a two-layer liquid \jour Prikl. Mekh. Tekh. Fiz. \yr 1983 \vol 24 \issue 5 \pages 51--56 \mathnet{http://mi.mathnet.ru/pmtf5718} \transl \jour J. Appl. Mech. Tech. Phys. \yr 1983 \vol 24 \issue 5 \pages 652--657 \crossref{https://doi.org/10.1007/BF00905877}