Remark on the paper ``On invariant curves of area-preserving mappings of an annulus''
The author gives some comments and clarifies some points concerning his paper [Nachr. Akad. Wiss. Göttingen, II. Math.-Phys. Kl. 1962, 1-20 (1962; Zbl 0107.29301)] mentioned in the title.
scientific article; zbMATH DE number 1746553