Bourne JE, Sauchelli S, Perry R, Page A, Leary S, England C, Cooper AR. Health benefits of electrically-assisted cycling: a systematic review. Int J Behav Nutr Phy. 2018 Nov 21;15(1):116. doi: 10.1186/s12966-018-0751-8
Jung T, Scott T, Davies HTO, Bower P, Whalley D, McNally R, Mannion R. Instruments for exploring organizational culture: a review of the literature. Public Adm Rev. 2009 Oct 12;69(6):1087-96.