Starov, A.; Kalashnikov, S. A.A. ILYUSHIN S FINAL RELATION, ALTERNATIVE EQUIVALENT RELATIONS AND VERSIONS OF ITS APPROXIMATION IN PROBLEMS OF PLASTIC DEFORMATION OF PLATES AND SHELLS PART 1: A.A. ILYUSHIN S FINAL RELATION. IJCCSE 2020, 16 (1), 106-129. https://doi.org/10.22337/2587-9618-2020-16-1-106-129.