TY - RPRT TI - Generalized extinction in bipyramidal crystals. AU - Thorkildsen G AU - Larsen HB AU - Semmingsen D AU - Bjaanes Ø PY - 2001 DO - 10.1107/s0108767300018572 UR - https://pubmed.ncbi.nlm.nih.gov/11223508/ ID - 11223508 ER -