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Ballard, W. B., D. J. Reed, S. G. Fancy, and P. R. Krausman.  1995.  Accuracy,
     precision, and performance of satellite telemetry for monitoring wolf 
     movements.  Pages 461-467 in L. N. Carbyn, S. H. Fritts, and D. R. Seip, 
     editors.  Ecology and conservation of wolves in a changing world.  
     Canadian Circumpolar Institute, Occasional Publication 35. 
     
Brezinka, J.  1995.  Land Condition Trend Analysis: Installation Report.  
     Minnesota Department of Natural Resources, Camp Ripley Series Report 7. 
      
Buechner, H. K., F. C. Craighead, Jr., J. J. Craighead, and C. E. Cote. 1971.  
     Satellites for research on free roaming animals.  BioScience 21:1201-1205.
     
Fancy, S. G., L. F. Pank, D. C. Douglas, C. H. Durby, G. W. Garner, S. C. 
     Amstrup, and W. L. Regelin.  1988.  Satellite telemetry: a new tool for 
     wildlife research and management.  U.S. Fish and Wildlife Service Resource 
     Publication Number 172.
     
Hurn, J.  1989.  GPS: a guide to the next utility.  Trimble Navigations, 
     Limited.  Sunnyvale, California.
     
Kolz, A. L., J. W. Lentfer, and H. G. Fallek.  1980.  Satellite radio tracking 
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Logsdon, T.  1992.  The Navstar Global Positioning System.  Van Norstrand 
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Mech, L. D., L. G. Adams, T. J. Meier, J. W. Burch, and B. W. Dale.  1998.  
     Wolves of Denali.  University of Minnesota Press, Minneapolis.
     
Mech, L. D., R. C. Chapman, W. W. Cochran, L. Simmons, and U. S. Seal.  1984.  
     A radio-triggered anesthetic-dart collar for recapturing large mammals.  
     Wildlife Society Bulletin 12:69-74.
     
Mech, L. D., and E. M. Gese.  1992.  Field testing the Wildlink capture collar 
     on wolves.  Wildlife Society Bulletin 20:249-256.
     
Mech, L. D., K. E. Kunkel, R. C. Chapman, and T. J. Kreeger.  1990.  Field 
     testing of commercially manufactured capture collars on wild deer.  
     Journal of Wildlife Management 54:297-299.
     
Moen, R., J. Pastor, and Y. Cohen.  1997.  Accuracy of GPS telemetry collar 
     locations with differential GPS.  Journal of Wildlife Management 61:530-
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Moen, R., J. Pastor, Y. Cohen, and C. C. Schwartz.  1996.  Effects of moose 
     movement and habitat use on GPS collar performance.  Journal of Wildlife 
     Management 60:659-668.
     
Rempel, R. S., and A. R. Rodgers.  1997.  Effects of differential correction 
     on accuracy of a GPS animal location system.  Journal of Wildlife 
     Management 61:525-529.
     
Rempel, R. S., A. R. Rodgers, and K. F. Abraham.  1995.  Performance of a GPS 
     animal location system under boreal forest canopy.  Journal of Wildlife 
     Management 59:543-551.
     
Rodgers, A. R., and P. Anson.  1994.  Animal-borne GPS: tracking the habitat.  
     GPS World 5:20-32.
      
Trimble Navigation, Limited.  1992.  GPS Pathfinder System General Reference.  
     Trimble Navigation, Limited.  Sunnyvale, California. 
     
Warner, D. W.  1967.  Space tracks.  Pages 221-228 in I. W. Knoblack, editor.  
     Readings in Biological Science.  Second edition.  Appleton-Century-Crofts, 
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