[1] Baird, B. B. 1977 Isomorphisms between inverse semigroups of injective transformations J. Australian Math. Soc. XXIII 199–201.
[2] Bigard, A., Keimel, K. and Wolfenstein, S., Groups et Anneaux Réticulés, Lecture Notes in Mathematics, Vol.608 (Springer Verlag, 1977).
[3] Borevich, Z. I. and Shafaverich, I. R., Number Theory (Academic Press, 1966).
[4] Mura, R. B. and Rhemtulla, A., Orderable Groups, Lecture Notes in Pure and Applied Math., Vol.27 (Dekker, 1977).
[5] Clifford, A. H. and Preston, G. B., Algebraic Theory of Semigroups, Math. Surveys of the Amer. Math. Soc. 7, Vol.1 (Providence, 1961) and Vol. 2 (Providence, 1967).
[6] Fuchs, L., Infinite Abelian Groups, Vol. II (Academic Press, 1973).
[7] Kirkwood, I., PhD. Dissertation, Monash University, Australia.
[8] Martinez, J. 1973 Archimedean—like classes of lattice ordered groups Trans. Amer. Math. Soc. 186 33–49 .
[9] Preston, G. B., Inverse Semigroups: some open questions, Symposium on Inverse Semigroups (Northern Illinois University, 1973).