Oh, Chang-Hyun; Lee, Seung Chan; Park, Sung-Jin; Lee, In-Kyu; Nam, Ki Hong; Lee, Ki-Soo; Chung, Bong-Young; Cho, Jung-Hyuck Archiv der Pharmazie, 1999, vol. 332, # 4 p. 111 - 114 doi: 10.1002/(SICI)1521-4184(19994)332:4<111::AID-ARDP111>3.0.CO;2-W