TY - RPRT TI - A computer program for variance function estimation, with particular reference to immunoassay data. AU - W A Sadler AU - M H Smith PY - 1987 DO - 10.1016/0010-4809(87)90013-9 UR - https://pubmed.ncbi.nlm.nih.gov/3829638/ ID - 3829638 ER -