1. [1] M. V. Babich, Real finite-gap solutions of equations connected with the sine-Gordon equation, Algebra i Analiz 2 (1990), no. 3, 63–77, English translation in Leningrad Math J. 2 (1991), 507–521.
2. [2] M. V. Babich, Constant mean curvature $H<1$ surfaces in hyperbolic space, preprint 316, Technische Universität Berlin, 1992.
3. [3] E. D. Belokolos, A. I. Bobenko, V. Z. Enolskii, A. R. Its, and V. B. Matveev, Algebro-geometric approach to nonlinear integrable equations, Springer-Verlag, to appear.
4. [4] A. Besse, Einstein manifolds, Ergebnisse der Mathematik und ihrer Grenzgebiete (3) [Results in Mathematics and Related Areas (3)], vol. 10, Springer-Verlag, Berlin, 1987.
5. [5] A. I. Bobenko, All constant mean curvature tori in ${\bf R}\sp 3,\;S\sp 3,\;H\sp 3$ in terms of theta-functions, Math. Ann. 290 (1991), no. 2, 209–245.