1. A. A. Lyapunov, “On Completely Additive Set Functions. I,” Izv. Akad. Nauk SSSR Ser. Mat. 4, 465–478 (1940).
2. A. A. Lyapunov, “On Completely Additive Set Functions. II,” Izv. Akad. Nauk SSSR Ser. Mat. 10(3), 277–279 (1946).
3. K. I. Chuĭkina, “On Additive Vector-Functions,” Dokl. Akad. Nauk SSSR 76, 801–804 (1951).
4. E. V. Glivenko, “On the Ranges of Additive Vector-Functions,” Mat. Sb. 34(76), 407–416 (1954).
5. Yu. G. Reshentnyak and V. A. Zalgaller, “On Rectifiable Curves, Additive Vector-Functions, and Mixing of Straight Line Segments,” Vestnik Leningrad. Gos. Univ. 2, 45–65 (1954).