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No. 12, Apr. 1995
No. 11, Feb. 1995
No. 10, Dec. 1994
No. 9, Sep. 1994
No. 8, Sep. 1994
No. 7, Jul. 1994
No. 6, Jun. 1994
No. 5, Apr. 1994
No. 4, Mar. 1994
No. 3, Jan. 1994
No. 2, Nov. 1993
No. 1, Oct. 1993
Song Yang
and
Dong-Ping Deng