A new method for approximate evaluation of the first eigenvalues in the spectral problem of hydrodynamic stability of Poiseuille flow in a circular pipe
Vv. Dubrovskii et al., A new method for approximate evaluation of the first eigenvalues in the spectral problem of hydrodynamic stability of Poiseuille flow in a circular pipe, DOKL MATH, 64(2), 2001, pp. 165-168