TY - RPRT TI - Alternating two-day cyclic behavior changes. AU - A A WEISS PY - 1958 DO - 10.1002/1097-4679(195810)14:4<433::aid-jclp2270140425>3.0.co;2-7 UR - https://pubmed.ncbi.nlm.nih.gov/13575591/ ID - 13575591 ER -