%0 Journal Article %A shokri, ali, shokri, abbas-ali, Mehdizadeh Khalsarei, Mohammad, pashaie, firoz %T A new symmetric two-step P-stable Obrechkoff method with 12 algebraic order for the numerical solution of second-order IVPs %J Journal of New Researches in Mathematics %V 6 %N 5 %P 127-140 %D 2020 %R %U https://sanad.iau.ir/fa/Article/797950