Citation:
S. I. Senashev, V. A. Chugunov, “Invariant solutions of viscoplasticity equations and solution of the problem of helical motion of a Bingham fluid between coaxial cylinders”, Prikl. Mekh. Tekh. Fiz., 32:4 (1991), 95–102; J. Appl. Mech. Tech. Phys., 32:4 (1991), 554–560