Mateo, J.M. et al. 2024. HydroNutriGuard: A Mobile-Based Hydroponics Nutrient Tracker with Recommender System for Lettuce. Isabela State University Linker: Journal of Engineering, Computing and Technology. 1, 2 (Dec. 2024), 16–26. DOI:https://doi.org/10.65141/ject.v1i2.n2.