G. TECSON, R.; MATEO, J. M.; TAMANI, J.; EMBAT, E. HydroNutriGuard: A Mobile-Based Hydroponics Nutrient Tracker with Recommender System for Lettuce. Isabela State University Linker: Journal of Engineering, Computing and Technology, [S. l.], v. 1, n. 2, p. 15–25, 2024. DOI: 10.65141/ject.v1i2.n2. Disponível em: https://www.isujournals.ph/index.php/ject/article/view/140. Acesso em: 2 nov. 2025.