Gilang Ryan Fernandes and Ika Mei Lina 2021. Boundary Value Analysis Testing Against Library Applications Using the Black Box Method as System Performance Optimization. Jurnal E-Komtek (Elektro-Komputer-Teknik). 5, 1 (Jun. 2021), 43-54. DOI:https://doi.org/10.37339/e-komtek.v5i1.528.