@article {Sirovich-1987-LDP, author= "L. Sirovich and M. Kirby", journal= "Journal of the Optical Society of America", number= "3", pages= "519--524", title= "Low Dimensional Procedure for the Characterization of Human Faces", volume= "4", year= "1987", theme= "", project= "", added-by= "Daniel Acevedo", date-added= "Fri March 30 14:47:54 2007" } @article {Sirovich-1987-LDP-url, author= "L. Sirovich and M. Kirby", journal= "Journal of the Optical Society of America", note= " \url{http://www.cs.brown.edu/research/vis/results/bibtex/Sirovich-1987-LDP.bib}{(bibtex: Sirovich-1987-LDP)}", number= "3", pages= "519--524", title= "Low Dimensional Procedure for the Characterization of Human Faces", volume= "4", year= "1987", theme= "", project= "", added-by= "Daniel Acevedo", date-added= "Fri March 30 14:47:54 2007" }