[1] Autoestradas de Galicia. https://www.autoestradas.com/la-autopista/medios-de-pago/
[2] https://costablancaclub.com/11062018-2/
[3] http://www.ideal.es/granada/funciona-nuevo-sistema-20171025140016-nt.html
[4] https://www.facebook.com/oBikeES/
[5] https://www.o.bike/es/video/
[7] https://es.2021discountsale.ru/category?name=bicicletas%20del%20ayuntamiento%20de%20granada
[9] https://ciclosfera.com/a/granada-obike
[10] https://www.eldiario.es/andalucia/granada/fracaso-bicis-alquiler-granada_1_2760123.html
[12] https://www.amazon.es/l/15823644031?ref_=pe_26592121_603342181
[13] https://informationmatters.net/internet-of-things-definitions/
[14] Internet of Things Global Standards Initiative". ITU. Retrieved 26 June 2015
[15] P. Guillemin and P. Friess “Internet of things strategic research road map,” The Cluster of European Research Projects, Tech. Rep., September 2009 https://www.itu.int/en/ITU-T/gsi/iot/Pages/default.aspx
[16] M. Damas, F. Gómez, S. Moreno, C. Bailón, A. Olivares (2017). La asignatura “Internet de las Cosas” en el master DATCOM de la UGR. Enseñanza y Aprendizaje de Ingeniería de Computadores. Número 7, pp. 93-109
[17] Internet of things. Wikipedia (edición inglesa). https://en.wikipedia.org/wiki/Internet_of_things
[18] Recommendation ITU -T Y.2060 : Overview of the Internet of things: http://www.itu.int/rec/T-REC-Y.2060-201206-I
[19] Vermesan, O., Eisenhauer, M., Sundmaeker, H., Guillemin, P., Serrano, M., Tragos, E. Z., ... & Bahr, R. (2017). Internet of things cognitive transformation technology research trends and applications. Cognitive Hyperconnected Digital Transformation: Internet of Things Intelligence Evolution.
[20] Oluyisola, O.E., Sgarbossa, F., Strandhagen, J.O.: Smart production planning and control: concept, use-cases and sustainability implications. Sustainability 12, 3791 (2020).