Area preserving homeomorphisms of open surfaces of genus zero
The author shows that an area preserving homeomorphism of the open annulus which has at least one periodic point must have infinitely many interior periodic points. He clarifies that the result has been claimed in an earlier paper [\textit{J. Franks}, Invent. Mat. 108, No. 2, 403-418 (1992; Zbl 0766.53037)], but the proof contained a gap.
scientific article; zbMATH DE number 1084802