Frishauf, Holtz, Goodman & Woodward
Phosphorus-containing compounds and process for producing the same
 2-Amino-4-(hydroxy)phosphinoylbutyryl-L-alanyl-L-alanine. 
Maiji Seika Kaisha Ltd.
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Takashi Satoshi Taro Tetsuro Shigeharu Koji Atsuyuki
Tsuruoka Imai Niida Watanabe Inouye Watanabe Satoh