Authors: B J Long; K J Calfas; W Wooten; J F Sallis; K Patrick; M Goldstein; B H Marcus; T L Schwenk; J Chenoweth; R Carter; T Torres; L A Palinkas; G Heath Journal: Am J Prev Med Date: 1996 Mar-Apr Impact factor: 5.043
Authors: R R Pate; M Pratt; S N Blair; W L Haskell; C A Macera; C Bouchard; D Buchner; W Ettinger; G W Heath; A C King Journal: JAMA Date: 1995-02-01 Impact factor: 56.272
Authors: Esther M F van Sluijs; Mireille N M van Poppel; Jos W R Twisk; Marijke J Chin A Paw; Karen J Calfas; Willem van Mechelen Journal: Am J Public Health Date: 2005-10 Impact factor: 9.308