TY - JOUR AU - Grey, I AU - Roth, Robert C2 - Journal of Solid State Chemistry DA - 2000-02-01 00:02:00 LA - en M1 - 150 PB - Journal of Solid State Chemistry PY - 2000 TI - New Calcium Tantalate Polytypes in the System Ca2Ta2O7 - Sm2Ti2O7 ER -