1.
O. Makhmudova. USING THE VARIABLE SUBSTITUTION METHOD WHEN SOLVING SOME FOURTHORDER EQUATIONS. Galaxy int. interdiscip. res. j. [Internet]. 2023 Dec. 7 [cited 2025 Apr. 7];11(12):201-6. Available from: http://internationaljournals.co.in/index.php/giirj/article/view/4799