TimeBliography by Willington Siabato (UPM) is a dynamic and online bibliography upon space and time in GIS. The bibliography is quite extensive (over 1300 papers) and well organized. It can be explored starting from any of the four main categories (core, secondary, others, and standards), by publication type (journal articles, book sections, etc.) or via free text search. Moreover, it offers the timeline view shown above that shows how the literature on this topic has developed over time. Definitely a very useful resource for anyone working in this area.