The first journal paper from my PhD has been published in the journal Computers, Environment and Urban Systems. The paper is titled Formalisation of the level of detail in 3D city modelling, and it is accessible here. If you do not have access to the full-text, you can access the author’s draft. In short, the work formalises the concept of level of detail in 3D city modelling, and it exposes its current shortcomings, focusing on CityGML. The paper analyses current LOD concepts found in GIS (26 of them), showing that we are dealing with a fuzzy term, which is not to a surprise to many practitioners and researchers. This is the principal publication of my PhD, which will serve as a foundation for most of the future work.