For citations:

Filimonov I.N. Marxist-Leninist alternative: the main critical comments by I.D. Koval’chenko on the counterfactual propositions concept by R.W. Fogel. History and Archives. 2026;8(3):153-166. (In Russ.) https://doi.org/10.28995/2658-6541-2026-8-3-153-166