Steiger, E., B. Resch, J. Porto de Albuquerque, A. Zipf (2016): Mining and correlating traffic events from human sensor observations with official transport data using self-organizing-maps. Transportation Research Part C: Emerging Technologies. Vol 73, Dec.16, pp 91–104. http://dx.doi.org/10.1016/j.trc.2016.10.010
Westerholt, R., Steiger, E., Resch, B. and Zipf, A. (2016): Abundant Topological Outliers in Social Media Data and Their Effect on Spatial Analysis. PLOS ONE, 11 (9), e0162360. DOI:10.1371/journal.pone.0162360.
Steiger, E., Resch, B., Zipf, A. (2015): Exploration of spatiotemporal and semantic clusters of Twitter data using unsupervised neural networks. International Journal of Geographical Information Science (IJGIS), Taylor & Francis. doi:10.1080/13658816.2015.1099658
Steiger, E., Westerholt, R., Resch, B. and Zipf, A. (2015): Twitter as an indicator for whereabouts of people? Correlating Twitter with UK census data. Computers, Environment and Urban Systems (CEUS), 54, pp. 255–265. Elsevier. doi:10.1016/j.compenvurbsys.2015.09.007
Mocnik, F.-B., Zipf, A., Raifer, M. (2017): The OpenStreetMap folksonomy and its evolution. Geo-spatial Information Science. DOI: 10.1080/10095020.2017.1368193.
Jonietz, D., V. Antonio, L. See, A. Zipf (2017): Highlighting Current Trends in Volunteered Geographic Information. International Journal of Geo-Information. 2017, 6(7), 202; doi:10.3390/ijgi6070202 Special Issue:Volunteered Geographic Information (VGI): http://www.mdpi.com/journal/ijgi/special_issues/VGI
Li, M., Westerholt, R., Fan, H., Zipf, A. (2016): Assessing spatiotemporal predictability of LBSN: A case study of three Foursquare datasets. GeoInformatica. Volume and issue pending. DOI:10.1007/s10707-016-0279-5.
Jacobs C. and A. Zipf (2017): Completeness of Citizen Science Biodiversity Data from a Volunteered Geographic Information Perspective. Geo-Spatial information Science, 20(1): 3-13. Taylor & Francis. DOI: 10.1080/10095020.2017.1288424.
Herfort, B., Reinmuth, M., Porto de Albuquerque, J., Zipf, A. (2017): Towards evaluating the mobile crowdsourcing of geographic information about human settlements. 20th AGILE conference 2017, Wageningen, Netherlands.
Steiger, E., Westerholt, R. and Zipf, A. (2016): Research on social media feeds – A GIScience perspective. In: Capineri, C, Haklay, M, Huang, H, Antoniou, V, Kettunen, J, Ostermann, F and Purves, R. (eds.) European Handbook of Crowdsourced Geographic Information, London: Ubiquity Press, pp. 237-254. DOI: 10.5334/bax.r.
Porto de Albuquerque, J., Eckle, M., Herfort, B. and Zipf, A. (2016): Crowdsourcing geographic information for disaster risk management and improving urban resilience: an overview of the lessons learned. In: Capineri, C, Haklay, M, Huang, H, Antoniou, V, Kettunen, J, Ostermann, F and Purves, R. (eds.) European Handbook of Crowdsourced Geographic Information, p. 325–337. London: Ubiquity Press. DOI: dx.doi.org/10.5334/bax.x
Zipf, A., Mobasheri, A., Rousell, A. ,Hahmann, S. (2016): Crowdsourcing for individual needs – the case of routing and navigation for mobility-impaired persons . In: Capineri, C, Haklay, M, Huang, H, Antoniou, V, Kettunen, J, Ostermann, F and Purves, R. (eds.) European Handbook of Crowdsourced Geographic Information, p. 325–337. London: Ubiquity Press. DOI: dx.doi.org/10.5334/bax.x
Jokar Arsanjani, J., Zipf, A., Mooney, P., Helbich, M. (Eds.)(2015): OpenStreetMap in GIScience: Experiences, Research, and Applications. Series: Lecture Notes in Geoinformation and Cartography. 2015, VII, 373 p. Sringer Science. Heidelberg, Berlin. ISBN 978-3-319-14279-1