TY - RPRT TI - Clarifying an ambiguous functional analysis with matched and mismatched extinction procedures. AU - D E Kuhn AU - I G DeLeon AU - W W Fisher AU - A E Wilke PY - 1999 DO - 10.1901/jaba.1999.32-99 UR - https://pubmed.ncbi.nlm.nih.gov/10201106/ ID - 10201106 ER -