León-Vega CG, López-Bonilla J, Agustín SY-S. Petersen-Varchenko’s Identity for Stirling Numbers of the First Kind. J. Inst. Engineering [Internet]. 2018 Jun. 4 [cited 2024 Nov. 23];14(1):162-4. Available from: https://nepjol.info./index.php/JIE/article/view/20080