title: Rotation of the planet mercury.
abstract: The equations of motion for the rotation of Mercury are solved for the general case by an asymptotic expansion. The findings of Liu and O'Keefe, obtained by numerical integration of a special case, that it is possible for Mercury's rotation to be locked into a 2:3 resonance with its revolution, are confirmed in detail. The general solution has further applications.
authors.forename: W H
authors.initials: WH
authors.lastname: Jefferys