1. http://tevcat.uchicago.edu
2. H.A. Ayala Solares, H. Zhou, C.M. Hui, P. Hüntemeyer for the HAWC Collaboration, in Timing calibration of the HAWC observatory. Proceedings of the ICRC’13. (arXiv: 1310.0074 [astro-ph.IM])
3. R.J. Lauer for the HAWC Collaboration, in Calibration and reconstruction performance of the HAWC observatory. Proceedings of the ICRC’13. (arXiv: 1310.0074 [astro-ph.IM])
4. T. Torres, A. Carramiñana, R. Alfaro, A. Iriarte for the HAWC Collaboration, in Deployment of the HAWC gamma-ray observatory in Sierra Negra, Mexico. Proceedings of the ICRC’13. (arXiv: 1310.0074 [astro-ph.IM])
5. The HAWC Collaboration, VAMOS: a pathfinder for the HAWC gamma ray observatory, in preparation