Reexamination of the brachiopod fauna from the Permian Karita Formation, southwest Japan - 1993
Permian-Triassic boundary and fauna at Doi Pha Phlung, northern Thailand - 1994
Permian brachiopods from Oman - 1994
Permian ammonoids from the Loei area, northeast Thailand - 1996
Oldhamina and Palaeoldhamina (Permian Brachiopoda) from Thailand - 1998
Carboniferous and Permian ammonoids from northern Thailand - 1999