Dongsu Han David G. Andersen Michael Kaminsky Konstantina Papagiannaki Srinivasan Seshan Access Point Localization Using Local Signal Strength Gradient. 99-108 2009 PAM http://dx.doi.org/10.1007/978-3-642-00975-4_10 conf/pam/2009 db/conf/pam/pam2009.html#HanAKPS09