SONEYE, Ramoni Adebola; AYODELE, Moyosola Ayodeji; ADEWALE, Olusola Kayode; HASSAN, Samuel Oluwatosin; ADEDOTUN, Adedayo Funmi; AKINFENWA, Olusheye Akin Aremu; OKUNUGA, Solomon Adebola. L-stable Implicit Two-Step Modified Extended Hybrid Block Backward Differentiation Formulae for Solving Nonlinear Second-Order Differential-Algebraic Equations of Higher Indexes. Nigerian Journal of Physics, [S. l.], v. 35, n. 2, p. 222–233, 2026. DOI: 10.62292/njp.v35i2.2026.526. Disponível em: https://njp.nipngr.org/index.php/njp/article/view/526. Acesso em: 14 may. 2026.