SOLIS, Romeo G.. Development of Equivalent Circuit Models for Non-Linear Resistors. Philippine Engineering Journal, [S.l.], v. 11, n. 2, sep. 2021. ISSN 2718-9287. Available at: <https://www.journals.upd.edu.ph/index.php/pej/article/view/8202>. Date accessed: 07 sep. 2025.