Lobovikov В. О. “Combining Universal Epistemology With Formal Axiology in a Multimodal Formal Axiomatic Theory ‘Sigma + 2C’, and Philosophical Foundations of Mathematics”. Respublica Literaria, vol. 4, no. 4, Dec. 2023, pp. 88-113, doi:10.47850/RL.2023.4.4.88-113.