M. D. Plimmer, N. Castagna, G. Di Domenico, P. Thomann, A. V. Taichenachev, V. I. Yudin, “2D laser collimation of a cold Cs beam induced by a transverse $B$-field”, Pis'ma v Zh. Èksper. Teoret. Fiz., 82:1 (2005), 18–22; JETP Letters, 82:1 (2005), 17–21
