4391910 Processes for producing thermophilic aspartase : Kazuo Kimura, Kenichiro Takayama, Yutaka Ado, Tamotsu Kawamoto, Izumi Masunaga, Hofu, Japan assigned to Kyowa Hakko Kogyo Co Ltddoi:10.1016/0734-9750(83)90737-1NoneBiotechnology Advances