00599naa#a2200169#i#450# EN\\bibl\131144 20260716004932.4 2500-3372 20260713b2026####ek#y0engy0150####ca RU Effectiveness and Demand for Social Contract Measures: An Empirical Analysis of Data for the Russian Federation and the Republic of Tatarstan Journal article Kemerovo Kemerovo State University 2026 9 с. Journal article local Maksimova Margarita Nikolaevna Kolpakov Ivan Il'ich vestnik-hss.kemsu.ru