Octaviana, M., and E. Aryanny. “Lagrange Multiplier for Particle Board Inventory Cost Optimization: Pengganda Lagrange Untuk Optimalisasi Biaya Persediaan Papan Partikel”. Academia Open, vol. 11, no. 1, June 2026, p. 10.21070/acopen.11.2026.14254, doi:10.21070/acopen.11.2026.14254.