Hybrid Signal-Processing Method Based on Neural Network for Prediction of NO3, K, Ca, and Mg Ions in Hydroponic Solutions Using an Array of Ion-Selective Electrodes. - Woo-Jae Cho; Hak-Jin Kim; Dae-Hyun Jung; Hee-Jo Han; Young-Yeol Cho (Sensors, 2019)

Application of a Spectroscopic Analysis-Based Portable Sensor for Phosphate Quantitation in Hydroponic Solutions. - Hee-Jo Han; Dae-Hyun Jung; Hak-Jin Kim; Taek Sung Lee; Hyoung Seok Kim; Ho-Youn Kim; Soo Hyun Park (J. Sensors, 2020)