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    $\begingroup$ Could someone come up with a Google Books link that works in Europe? $\endgroup$ Commented Jan 20, 2012 at 13:04
  • $\begingroup$ @Szabolcs What about this here books.google.de/… $\endgroup$ Commented Jan 25, 2012 at 2:29
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    $\begingroup$ As a tiny note: one unexpected benefit of the ContourPlot[] approach is that one can exploit the RegionFunction option if one is only interested in roots within a given region. $\endgroup$ Commented Jan 25, 2012 at 10:35
  • $\begingroup$ @J.M. I just posted a new version using ContourPlot[] - seems very short. $\endgroup$ Commented Jan 26, 2012 at 6:08
  • $\begingroup$ I noticed, @Vitaliy; sadly I can't upvote again... $\endgroup$ Commented Jan 26, 2012 at 6:09