David-Negre, T. “Social Network Analysis in Tourism for Improving Marketing Strategies. Understanding tourists’ Behaviour through Their Customer Journey: Supervisors: Sergio Moreno-Gil and Juan M. Hernández Institution Awarding the Ph. D. Degree: Universidad De Las Palmas De Gran Canaria Date of Defence: 08 November 2019”. European Journal of Tourism Research, vol. 26, Aug. 2020, p. 2613, doi:10.54055/ejtr.v26i.1944.