TY - RPRT TI - A simple design for an accurate uniformity phantom. AU - C S Bowring AU - A N Tobin AU - C Chudley AU - W Vennart PY - 1987 DO - 10.1259/0007-1285-60-709-101 UR - https://pubmed.ncbi.nlm.nih.gov/3814994/ ID - 3814994 ER -