@article{JAAK10,
 author = {Jankowski, Piotr and Andrienko, Natalia and Andrienko, Gennady and Kisilevich, Slava},
 journal = {Transactions in GIS},
 number = {6},
 pages = {833-852},
 title = {Discovering Landmark Preferences and Movement  Patterns from Photo Postings},
 volume = {14},
 year = {2010}
}