Frank W. Geels Rob P. J. M. Raven Non-linearity and Expectations in Niche-Development Trajectories: Ups and Downs in Dutch Biogas Development (1973-2003). 375-392 2006 18 Technol. Anal. Strateg. Manag. 3-4 https://doi.org/10.1080/09537320600777143 https://www.wikidata.org/entity/Q57574952 db/journals/taasm/taasm18.html#GeelsR06