共 9 条
- [1] Bortnick N.M., 1953, U.S.Patent, Patent No. 2632022
- [2] BORTNICK NM, 1953, Patent No. 2632023
- [4] KNIGHT HB, 1952, BIOCHEM PREPARAT, V2, P100
- [7] SWERN D, 1952, BIOCHEM PREPARAT, V2, P104
- [8] ZIEGLER K, 1944, ORG SYNTH, V1, P314
- [9] 1947, Patent No. 591027