1. H. Bäumler, I. Dzhenev, S. Iovtchev, R. Petrova. D. Lerche, Poster: Biophysics of Cell Surface, Proceedings of the Fifth International Symposium ‘Biophysics of Cell Surface’, Kühlungsborn, GDR, 29 September–03 October, 1988.
2. S. Jovtchev, S. Stoeff, I. Dzhenev, Proceedings of the Seventh National Conference of Biomedical Physics and Engineering, Sofia, 17–19 October, 1996, p. 95.
3. The Thiobarbituric Acid Assay of Sialic Acids