I wonder how many Wikipedia articles have XKCD comics?

Edit: I asked Opus 5.5, medium effort, and got a lame answer. Then asked it for "extra" effort, and the summary of that is:

WP->xkcd: Ballmer Peak, Geohashing, Time, a few other passing mentions

xkcd->WP: Missal of Silos, Rolle's Theorem, at least 54 other general references to WP