Worawan Tontiwattana. 1990. Internal magnetic fields in yttrium iron garnet. Graduate School, Chulalongkorn University;
Worawan Tontiwattana. (1990) Internal magnetic fields in yttrium iron garnet . Chulalongkorn University/Bangkok.
Worawan Tontiwattana. Internal magnetic fields in yttrium iron garnet. . Bangkok:Chulalongkorn University, 1990.
Worawan Tontiwattana. (1990) Internal magnetic fields in yttrium iron garnet . Chulalongkorn University/Bangkok.