.-. Komariah, .-. Husnan, .-. Mujiyo, and .-. Suryono, “The accuracy of PlanetScope imagery to nitrogen, phosphorus, potassium and sulfur nutrition estimation in terraced paddy field”, Int. J. Agril. Res. Innov. & Tech., vol. 11, no. 1, pp. 1–9, Jul. 2021.