German Vargas added missing citations to bibliography  almost 9 years ago

Commit id: 1a6779e9dd47667d0a4fc32928111ed9bf228b93

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@book{Agrawal_2005,  doi = {10.1002/047174140x},  url = {http://dx.doi.org/10.1002/047174140x},  year = {2005},  month = {jun},  publisher = {Wiley-Blackwell},  author = {Govind P. Agrawal},  title = {{Lightwave Technology}},  }