Busch, Hans-Christian, et al. “Hybrid Forms of Urban Production through Digitalisation? Trends and Cases from North Rhine-Westphalia”. Raumforschung Und Raumordnung | Spatial Research and Planning, vol. 78, no. 4, Aug. 2020, pp. 321-36, https://doi.org/10.2478/rara-2020-0013.