message: Use correct BibTeX syntax for month field.
diff: journal = {IEEE Transactions on Robotics and Automation},
  title = {Robot sensor calibration: solving AX=XB on the Euclidean group},
  year = {1994},
  + month = oct,
  volume = {10},
  number = {5},
  pages = {717-721},
  doi = {10.1109/70.326576},
  - ISSN = {1042-296X},
  - month = {Oct}
  + issn = {1042-296X}
  }
  @inproceedings{PM03,
  author = {P{\'e}rez, Patrick and Gangnet, Michel and Blake, Andrew},
  journal = {IEEE Transactions on Robotics and Automation},
  title = {A new technique for fully autonomous and efficient 3D robotics hand/eye calibration},
  year = {1989},
  + month = jun,
  volume = {5},
  number = {3},
  pages = {345-358},
  doi = {10.1109/70.34770},
  - ISSN = {1042-296X},
  - month = {June}
  + issn = {1042-296X}
  }
  @inproceedings{UES01,
  author = {Uyttendaele, Matthew and Eden, Ashley and Skeliski, R},
  