TY - RPRT TI - Calibrating and testing tissue equivalent proportional counters with 37Ar. AU - E Anachkova AU - A M Kellerer AU - H Roos PY - 1994 DO - 10.1007/bf01210456 UR - https://pubmed.ncbi.nlm.nih.gov/7708908/ ID - 7708908 ER -