TY - RPRT TI - Three alternatives to the double-blind. AU - R Plutchik AU - S R Platman AU - R R Fieve PY - 1969 DO - 10.1001/archpsyc.1969.01740160044007 UR - https://pubmed.ncbi.nlm.nih.gov/4886346/ ID - 4886346 ER -