O. S. Redozubova, “$T$-pairs of congruences with constant distance and constant angle between corresponding rays”, Dokl. Akad. Nauk SSSR, 147:5 (1962), 1035–1037
1961
2.
O. S. Redozubova, “Special kinds of $T$-pairs of congruence”, Dokl. Akad. Nauk SSSR, 137:2 (1961), 284–286
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