Improved Nagata Current Source Insensitive to Temperature and Power Supply Voltage. - Takashi Hosono; Lei Sha; Souma Yamamoto; Mayu Hirano; Takashi Ida; Anna Kuwana; Haruo Kobayashi 001; Yoichi Moroshima; Hiromichi Harakawa; Takeshi Oikawa (ISOCC, 2020)