1. Orlov A. I. Development of the Methods of Mathematical Research (2006 – 2015) / Zavod. Lab. Diagn. Mater. 2017. Vol. 83. N 1. Part 1. P. 78 – 86 [in Russian].
2. Orlov A. I. Stability in socio-economic models. — Moscow: Nauka, 1979. — 296 p. [in Russian].
3. Orlov A. I. Statistics of Non-Numeric Objects and Expert Estimation / Expert estimates. Questions of cybernetics. Vol. 58. — Moscow: Nauch Sovet AN SSSR po kompleksnoi probleme «Kibernetika», 1979. P. 17 – 33 [in Russian].
4. Tyurin Yu. N., Litvak B. G., Orlov A. I., Satarov G. A., Shmerling D. S. Analysis of non-numeric information / Zavod. Lab. 1980. Vol. 46. N 10. P. 931 – 935 [in Russian].
5. Orlov A. I. Statistics of Non-Numeric Objects (review) / Zavod. Lab. 1990. Vol. 56. N 3. P. 76 – 83 [in Russian].