G. I. Gannochenko, L. S. Ermolaev, N. A. Zadorozhnyi, “On the position of the central compression shock in an underexpanded sonic jet issuing from a slot nozzle”, Prikl. Mekh. Tekh. Fiz., 27:4 (1986), 89–91; J. Appl. Mech. Tech. Phys., 27:4 (1986), 559–561
