The following publications are possibly variants of this publication:
- Quasi-symmetric 2-(41, 9, 9) designs and doubly even self-dual codes of length 40Akihiro Munemasa, Vladimir D. Tonchev. aaecc, 33(6):855-866, 2022. [doi]
- The existence of certain extremal [54, 27, 10] self-dual codesVladimir D. Tonchev, Vassil Y. Yorgov. TIT, 42(5):1628-1631, 1996.
- Extremal self-dual codes from symmetric designsEdward Spence, Vladimir D. Tonchev. DM, 110(1-3):265-268, 1992. [doi]
- Quasi-symmetric Designs and Self-dual CodesVladimir D. Tonchev. ejc, 7(1):67-73, 1986. [doi]