1. Dioctahedral mica minerals with ammonium ions;Higashi;Miner. J.,1978
2. Tobelite, a new ammonium dioctahedral mica;Higashi;Miner. J.,1982
3. Determination of ammonium in mica clay minerals;Higashi;J. Mineral. Soc. Jpn.,1986
4. Mineralogical properties of synthetic K-NH4 dioctahedral mica series;Higashi;Abstr. Annu. Meet. Clay Sci. Soc. Japan,1986
5. Mineralogical features of sericite comprising Roseki clay deposits in the Chugoku province of western Japan, with special reference to interlayer NH4 composition, mica/smectite interstratification, 2M2 polytype and thermal behavior;Higashi;Min. Geol.,1991