1. Aleksandrov, A.D. (1956) Uniqueness theorems for the surfaces in the large, I, Vestnik Leningrad Univ. 11, no. 19, 5–17; English transl. in Am. Math. Soc. Transl.21 (1962) 341–354
2. Aleksandrov, A.D. (1957) ibid.12, 15–44; 354–388
3. Aleksandrov, A.D. (1958a) ibid.13, 14–26; 389–403
4. Aleksandrov, A.D. (1958b) ibid.13, 5–8; 412–416
5. Aleksandrov, A.D., Volkov, Ju.A. (1958) ibid.13, 27–34; 403–411