TY - RPRT TI - Sample preparation by supercritical fluid extraction for quantification. A model based on the diffusion-layer theory for determination of extraction time. AU - T Veress PY - 1994 DO - 10.1016/0021-9673(94)80117-7 UR - https://pubmed.ncbi.nlm.nih.gov/8032486/ ID - 8032486 ER -