ON SINGULAR POINTS OF EQUATIONS OF MECHANICS Статья Ivanov A.P. Doklady Mathematics. Том 97. 2018. С. 167-169
USE OF THE DIRECT ENZYME-IMMUNOASSAY (EIA) WITH GENUS-SPECIFIC PEROXIDASE CONJUGATE IN LEPTOSPIROSIS Статья VOLINA E.G., IVANOV A.P., KIKTENKO V.S., TKACHENKO E.A., ARUTYUNOVA G.A. Zhurnal Mikrobiologii Epidemiologii i Immunobiologii. 1986. С. 72-75