Vajzović, Fikret, and Ramiz Vugdalić. “Two Exponential Formulas for $\alpha$-Times Integrated Semigroups $\boldsymbol{(\alpha} \boldsymbol{\in} \boldsymbol{\mathbb{R}^ + )}$”. Sarajevo Journal of Mathematics 1, no. 1 (June 12, 2024): 93–115. Accessed November 23, 2024. https://sjm.anubih.ba/index.php/sjm/article/view/455.