Schmitz, Nicolas, et al. “Informality in the Regional Growth Process. Insights into a ‘black box’ of Planning Practice in the Case of Luxembourg”. 2022. Raumforschung Und Raumordnung | Spatial Research and Planning, vol. 80, no. 6, Dec. 2022, pp. 711-26, https://doi.org/10.14512/rur.175.