SiljanderR.P. (1977) Fundamentals of Physical Surveillance: A service guide for uniformed and plainclothes policemen, Illinois: Charles Thomas Publishing, p. ix.
2.
BuckwalterA. (1983) Surveillance and Undercover Investigation, Stoneham, MA: Butterworths, p. 1.
3.
SiljanderR.P. (1977) op. cit. p. ix.
4.
RennieJames (1996) The Operators. On the streets with 22nd Company, London: Century.
5.
WerrP.B. and KnapperC. (1968) The perception of people and events, Glasgow: Robert Maclehose and Co. Ltd.
6.
Interview with surveillance personnel.
7.
DuncanJ. and HumphreysG. (1992) “Beyond the Search Surface: Visual Search and Attentional Engagement”, Journal of Experimental Psychology: Human perception and performance, 18, pp. 578–588.
8.
BergerR.C. and McLeod. (1996) “Display Density Influences Visual Search for Conjunctions of Movement and Orientation”, Journal of Experimental Psychology: Human Perception and Performance22(1) pp. 114–121.
9.
DuncanJ. and HumphreysG. (1992) “Beyond the Search Surface: Visual search and Attentional Engagement”, Journal of Experimental Psychology: Human Perception and Performance, 18, pp. 578–588.
10.
WoolfeJ.M.HillS.R.StwartM.I. and O'ConnellK.M. (1992) “The role of Categorization in visual search for Orientation”, Journal of Experimental Psychology: Human Perception and Performance, Vol. 18(1) pp. 34–49.
11.
DriverJ. and McLeodP. (1992) “Reversing Visual Search Asymmetries with Conjunction of Movement and Orientation”, Journal of Experimental Psychology: Human Perception and Performance, 18(1) pp. 22–23.
12.
TriesmanA. (1991) “Search Similarity and Integration of Features between and within Dimensions”, Journal of Experimental Psychology: Human Perception and Performance17, 3, pp. 652–676.
13.
WerrP.B. and KnapperC. (1968) The Perception of People and Events, Glasgow. Robert Maclehose and Co. Ltd, p. 32.
14.
DuncanJ. and HumphreysG. (1992) op. cit.
15.
BergerR.C. and McLeod. (1996) “Display Density Influences Visual Search for Conjunctions of Movement and Orientation”, Journal of Experimental Psychology: Human Perception and Performance22(1), pp. 114–121.
16.
Ibid.
17.
RennieJames (1996) op. cit.
18.
WoolfeJ.M.HillS.R.StwartM.I. and O'ConnellK.M. (1992) op. cit.
19.
BergerR.C. and McLeod. (1996) op. cit.
20.
Interview with surveillance personnel.
21.
BuckwalterA. (1983) op. cit., p. 27.
22.
SiljanderR.P. (1977) op. cit., p. 32.
23.
GordievskyOleg. (1995) “Next Stop Execution”, The Autobiography of Oleg Gordievsky, London: Macmillan.