Abdujabbor Abdurazakov, Nasiba Makhmudova, and Nilufar Mirzamakhmudova, “ON ONE METHOD FOR SOLVING DEGENERATING PARABOLIC SYSTEMS BY THE DIRECT LINE METHOD WITH AN APPENDIX IN THE THEORY OF FILRATION”, Euro. J. Res. Dev. Sus., vol. 2, no. 5, pp. 138-140, May 2021.