O. O. Chaikovska, R. V. Smaliy, N. A. Shtyl, and Кostyuk O. M., “p-Nitrophenyl ester of (diphenylphosphoryl)acetic acid as a reagent for the synthesis of 2-(phosphorylmethyl)benzimidazole”, J. Org. Pharm. Chem., vol. 18, no. 3(71), pp. 39–42, Sep. 2020.