共 14 条
- [1] [Anonymous], 2002, EXPT QUASIEXPERIMENT
- [2] Cajal S.Ramon., 1999, Advice for a young investigator
- [3] Campbell DT., 2002, EXPT QUASIEXPERIMENT, P171, DOI DOI 10.1093/OBO/9780195389678-0053
- [5] EISLER D, 2010, SCAND J WORK ENV HEA, V36, P289
- [6] Köper B, 2009, SCAND J WORK ENV HEA, V35, P413
- [9] Sackett DL, 2002, CAN MED ASSOC J, V167, P363