Starov A, Kalashnikov S. A.A. ILYUSHIN’S FINAL RELATION, ALTERNATIVE EQUIVALENT RELATIONS AND VERSIONS OF ITS APPROXIMATION IN PROBLEMS OF ELASTIC DEFORMATION OF PLATES AND SHELLS. PART 2: ALTERNATIVE EQUIVALENT RELATIONS OF A.A. ILYUSHIN. IJCCSE [Internet]. 2020 Sep. 24 [cited 2024 Apr. 19];16(3):78-99. Available from: https://ijccse.iasv.ru/index.php/ijccse/article/view/310