T. Blyth: Lattices and ordered algebraic structures. Springer 2005, 310p. Eur 70. Michael Darnel: Theory of lattice-ordered groups. Dekker 1997, 560p. 0-8247-9326-9. $165. George Elliott/Daniele Mundici: A characterisation of lattice-ordered abelian groups. Math. Zeit. 213 (179-185). Laszlo Fuchs: Partially ordered algebraic systems. Pergamon 1963. [= Teilweise geordnete algebraische Strukturen. Vandenhoeck 1966, 310p. 3-525-40124-8. DM 64.] A. Glass/W. Holland: Lattice-ordered groups. Kluwer 1989, 400p. Dfl. 185. L. Haines: On free monoids partially ordered by embedding. J. Comb. Theory 6 (1969), 94-98. Graham Higman: Ordering by divisibility in abstract algebras. Proc. London Math. Soc. 2 (1952), 326-336. V. Kopytov/N. Medvedev: Right-ordered groups. Plenum 1996. P. Kropholler: Amenability and right orderable groups. Bull. London Math. Soc. 25 (1993), 347-352. P. Kropholler/P. Linnell/J. Moody: Applications of a new K-theoretic theorem to soluble group rings. Proc. AMS 104 (1988), 675-684. B. Neumann: On ordered division rings. Trans. AMS 66 (1949), 202-346. Mikko Saarimäki/Pekka Sorjonen: Valued groups. Math. Scand. 70 (1992), 265-280. 1380 G. Trevisan: Classificazione dei semplici ordinamenti di un gruppo libero commutativo con n generatori. Rend. Sem. Mat. Padova 22 (1953), 143-156.