Update bibtex db format

papers/project.bib

   citeseercitationcount = {0},
   citeseerurl = {http://citeseer.ist.psu.edu/36540.html},
   comment = {Not relevant.},
-  file = {Abowd1997.pdf:Abowd1997.pdf:PDF},
+  file = {Abowd1997.pdf:Abowd1997.pdf:PDF;Abowd1997.pdf:Abowd1997.pdf:PDF},
   owner = {chris},
-  pdf = {Abowd1997.pdf},
   timestamp = {2009.12.01}
 }
 
 	frequency domain features, classifiers, and time series or event-based
 	modeling algorithms.},
   doi = {10.1109/MPRV.2008.36},
-  file = {Bannach2008.pdf:Bannach2008.pdf:PDF},
+  file = {Bannach2008.pdf:Bannach2008.pdf:PDF;Bannach2008.pdf:Bannach2008.pdf:PDF},
   owner = {chris},
-  pdf = {Bannach2008.pdf},
   timestamp = {2009.12.01}
 }
 
   number = {2},
   comment = {General intro and basic history},
   doi = {10.1109/MPRV.2008.26},
-  file = {Davies2008.pdf:Davies2008.pdf:PDF},
+  file = {Davies2008.pdf:Davies2008.pdf:PDF;Davies2008.pdf:Davies2008.pdf:PDF},
   issn = {1536-1268},
   keywords = {activity recognition, activity-based computing, context-aware computing},
   owner = {chris},
-  pdf = {Davies2008.pdf},
   timestamp = {2009.11.30}
 }
 
   citeulike-linkout-2 = {http://dx.doi.org/http://dx.doi.org/10.1109/TITB.2005.856863},
   citeulike-linkout-3 = {http://dx.doi.org/10.1109/TITB.2005.856863},
   doi = {10.1109/TITB.2005.856863},
-  file = {Parkka2006.pdf:Parkka2006.pdf:PDF},
+  file = {Parkka2006.pdf:Parkka2006.pdf:PDF;Parkka2006.pdf:Parkka2006.pdf:PDF},
   keywords = {activity, coact, health, walton, wearable},
   owner = {chris},
-  pdf = {Parkka2006.pdf},
   posted-at = {2008-12-09 14:55:55},
   priority = {2},
   timestamp = {2009.12.03},
   month = {April--June },
   comment = {"over one billion camera phones were sold last year"},
   doi = {10.1109/MPRV.2008.28},
-  file = {Reynolds2008.pdf:Reynolds2008.pdf:PDF},
+  file = {Reynolds2008.pdf:Reynolds2008.pdf:PDF;Reynolds2008.pdf:Reynolds2008.pdf:PDF},
   owner = {chris},
-  pdf = {Reynolds2008.pdf},
   timestamp = {2009.12.01}
 }
 
   address = {New York, NY, USA},
   publisher = {ACM},
   doi = {http://doi.acm.org/10.1145/1555816.1555835},
-  file = {Wang2009.pdf:Wang2009.pdf:PDF},
+  file = {Wang2009.pdf:Wang2009.pdf:PDF;Wang2009.pdf:Wang2009.pdf:PDF},
   isbn = {978-1-60558-566-6},
   location = {Krak\'{o}w, Poland},
   owner = {chris},
-  pdf = {Wang2009.pdf},
   timestamp = {2009.12.03}
 }
 
 o2008\;Eagle2006\;Horvitz1998\;Hudson2003\;Keerthi1999\;Lee2007\;Leste
 r2005\;Lester2006\;Liao2007\;Liao2007a\;Liao2007b\;Lukowicz2002\;Mahda
 viani2007\;Mathie2004\;Maurer2006\;Parkka2006\;Patterson2004\;Philipos
-e2003\;Philipose2003a\;Philipose2004\;Quinlan1986\;Raento2005\;Ravi200
-5\;Rudstroem2004\;Salber1999\;Schapire1999\;Schilit1994\;Schmidt1999\;
-Siewiorek2003\;Song2005\;Stiefmeier2008\;Tentori2008\;Terry2002\;Voida
-2002\;Wang2009\;Wyatt2007\;Yang2008\;;
+e2003\;Philipose2003a\;Philipose2004\;Raento2005\;Ravi2005\;Rudstroem2
+004\;Salber1999\;Schapire1999\;Schilit1994\;Schmidt1999\;Siewiorek2003
+\;Song2005\;Stiefmeier2008\;Tentori2008\;Terry2002\;Voida2002\;Wang200
+9\;Wyatt2007\;Yang2008\;;
 }