Affordable field environmental monitoring and plant growth measurement system for smart agriculture. - Takashi Okayasu; Andri Prima Nugroho; Atsushige Sakai; Daisaku Arita; Takashi Yoshinaga; Rin-Ichiro Taniguchi; Masafumi Horimoto; Eiji Inoue; Yasumaru Hirai; Muneshi Mitsuoka (ICST, 2017)