1. R. Fleming and J. Jamison, Isometries on Banach Spaces: Function Spaces (Chapman & Hall/CRC, Boca Raton, FL, 2003).
2. V. Ovchinnikov, Funkt. Anal. Prilozh. 4 (3), 78–85 (1970)
3. V. Ovchinnikov, Dokl. Akad. Nauk SSSR 191, 769–771 (1970).
4. M. Zaidenberg, Dokl. Acad. Nauk SSSR 234 (2), 283–286 (1977).
5. A. Sinclair, Proc. Am. Math. Soc. 24, 209–214 (1970).