L. G. Dezhenkova, V. B. Tsvetkov, A. A. Shtil, “Inhibitors of topoisomerases I and II: chemical structure, mechanisms of action and the role in cancer chemotherapy”, Usp. Khim., 83:1 (2014), 82–94; Russian Chem. Reviews, 83:1 (2014), 82–94
S. Yu. Dobrokhotov, V. P. Maslov, V. B. Tsvetkov, “Problem of the reversal of a wave for the model equation $r_t+rr_X-\dfrac{ih}{2}r_{XX}=0$”, Mat. Zametki, 51:6 (1992), 143–147; Math. Notes, 51:6 (1992), 624–627