TY - RPRT TI - Nonsymmetrical X-ray diffraction in a perfect rectangular t x l crystal. Extinction and absorption. AU - G Thorkildsen AU - HB Larsen PY - 1999 DO - 10.1107/s0108767398005108 UR - https://pubmed.ncbi.nlm.nih.gov/10927225/ ID - 10927225 ER -