@book{ Solr-71761, title = {Understanding surveillance technologies spy devices, privacy, history & applications}, author = {Petersen, Julie K.}, address = {Boca Raton}, publisher = {Auerbach Publications}, year = {2007}, edition = {Rev. and expanded 2nd ed.}, pages = {1007}, url = {https://proxy.k.utb.cz/login?url=http://marc.crcnetbase.com/isbn/9780849383205} }