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Bibliography

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G. Birkhoff, Lattice theory, rev. ed., Amer. Math. Soc. Colloq. Publ. Vol. 25, Amer. Math. Soc., Providence, R. I., 1948. MR 0029876 (10:673a)

[2]

A. H. Clifford, A noncommutative ordinally simple linearly ordered group, Proc. Amer. Math. Soc. 2 (1952), 902-903. MR 0045739 (13:625a)

[3]

P. Conrad, The structure of a lattice-ordered group with a finite number of elements, Michigan Math. J. 7 (1960), 171-180. MR 0116059 (22:6854)

[4]

C. Holland, The l-group of automorphisms of an ordered set, Michigan Math. J. 10 (1963), 399-408. MR 0158009 (28:1237)

[5]

P. Lorenzen, Über halbgeordnete Gruppen, Math. Z. 52 (1949), 484-526. MR 0033826 (11:497a)

[6]

B. H. Neumann, On ordered groups, Amer. J. Math. 71 (1948), 1-18. MR 0028312 (10:428a)