The Animal Farm Research

This set of references isn't nearly comprehensive - there's a lot of information about procedurally generating textures, much more than buildings or cities. My thesis also isn't focused on textures, so it's just a side-section. Still, a lot of useful papers:

• Ebert, D. S., Musgrave, F. K., Peachey, D., Perlin, K., and Worley, S. 2002 Texturing and Modeling: a Procedural Approach. 3rd. Morgan Kaufmann Publishers Inc.
• Perlin, K. 1985. An image synthesizer. SIGGRAPH Comput. Graph. 19, 3 (Jul. 1985), 287-296. DOI= http://doi.acm.org/10.1145/325165.325247
• Witkin, A. and Kass, M. 1991. Reaction-diffusion textures. SIGGRAPH Comput. Graph. 25, 4 (Jul. 1991), 299-308. DOI= http://doi.acm.org/10.1145/127719.122750
• Reeves, W. T. 1983. Particle Systems—a Technique for Modeling a Class of Fuzzy Objects. ACM Trans. Graph. 2, 2 (Apr. 1983), 91-108. DOI= http://doi.acm.org/10.1145/357318.357320
• Miyata, K. 1990. A method of generating stone wall patterns. SIGGRAPH Comput. Graph. 24, 4 (Sep. 1990), 387-394. DOI= http://doi.acm.org/10.1145/97880.97921
• Preparata, F. P. and Shamos, M. I. 1985 Computational Geometry: an Introduction. Springer-Verlag New York, Inc.
• Legakis, J., Dorsey, J., and Gortler, S. 2001. Feature-based cellular texturing for architectural models. In Proceedings of the 28th Annual Conference on Computer Graphics and interactive Techniques SIGGRAPH '01. ACM, New York, NY, 309-316. DOI= http://doi.acm.org/10.1145/383259.383293
• Lefebvre, L., and Poulin, P. 2000. Analysis and synthesis of structural textures. In Graphics Interface, 77-86
• Wei, L. and Levoy, M. 2000. Fast texture synthesis using tree-structured vector quantization. In Proceedings of the 27th Annual Conference on Computer Graphics and interactive Techniques International Conference on Computer Graphics and Interactive Techniques. ACM Press/Addison-Wesley Publishing Co., New York, NY, 479-488. DOI= http://doi.acm.org/10.1145/344779.345009
• Lefebvre, S. and Neyret, F. 2003. Pattern based procedural textures. In Proceedings of the 2003 Symposium on interactive 3D Graphics (Monterey, California, April 27 - 30, 2003). I3D '03. ACM, New York, NY, 203-212. DOI= http://doi.acm.org/10.1145/641480.641518