1. A. V. Akopyan: PL-analogue of the Nash-Kuiper theorem (in Russian), preprint (2007).
2. A. D. Alexandrov: On partitions and tessellations of the plane (in Russian), Mat. Sbornik 2 (1937), 307–318.
3. B. S. Baker, E. Grosse and C. S. Rafferty: Nonobtuse triangulations of polygons, Discrete Comput. Geom. 3 (1988), 147–168.
4. I. Benjamini and N. Curien: Local limit of packable graphs, arXiv:0907.2609.
5. I. Benjamini and O. Schramm: Lack of Sphere Packings of Graphs via Non-Linear Potential Theory, in preparation.