@ARTICLE{Rothganger2006a,
  author = {Rothganger, F. and Lazebnik, S. and Schmid, C. and Ponce, J.},
  title = {3D Object Modeling and Recognition Using Local Affine-Invariant Image
	Descriptors and Multi-View Spatial Constraints},
  journal = {International Journal of Computer Vision},
  year = {2006},
  volume = {66},
  pages = {231-259},
  number = {3},
}