[1] J. Novák:
On completions of convergence commutative groups. General Topology and its Relations to Modern Analysis and Algebra III. (Proc. Third Prague Topological Sympos., 1971), Academia, Praha, pp. 335–340.
MR 0365451
[2] R. Frič, F. Zanolin: Strict completions of $L^*_0$-groups. Czechoslovak Math. J. (to appear).