Experimental article published on 29 April 1994 in Science 264(5159), pp. 719–725. The 2013 PMC availability date is distinct from journal publication.
Cited passages: Figure 2A–C; Table 2 and discussion of activity counts and loss of rhythmicity; References and Notes 10 and 14; Vitaterna and others (1994), Mutagenesis and Mapping of a Mouse Gene, Clock, Essential for Circadian Behavior, Figure 1 and References and Notes 6–10.
Authored review published in 2001 in Alcohol Research & Health 25(2), pp. 85–93. The actually inspected PDF copy is linked below; the publisher record is hosted by PubMed Central.
Cited passages: Vitaterna, Takahashi and Turek (2001), Overview of Circadian Rhythms, pp. 85–86, Biological Rhythms and Basic Properties of Circadian Rhythms; p. 92, glossary entries Entrainment, Free running and Masking; pp. 86–87, Figure 1A; p. 92, Free running; pp. 86–87, synchronization to external cues; p. 92, Entrainment and Zeitgeber.