@ARTICLE{raey,
  author = {Chatzichristofis, SavvasA. and Iakovidou, Chryssanthi and Boutalis,
	YiannisS. and Angelopoulou, Elli},
  title = {Mean Normalized Retrieval Order (MNRO): a new content-based image
	retrieval performance measure},
  journal = {Multimedia Tools and Applications},
  year = {2012},
  pages = {1-32},
  doi = {10.1007/s11042-012-1192-z},
  publisher = {Springer US},
  url = {http://dx.doi.org/10.1007/s11042-012-1192-z}
}