Data source: EPSG
Information source: J Bolliger; 1967, "Die Projektionen der schweizerischen Plan- und Kartenwerke".
Revision date: 2025-01-21
Remarks: In EPSG replaced by Oblique Mercator method (code 9815) (see Bundesamt für Landestopografie swisstopo document "swissprojectionengis.pdf"). In swisstopo, Bolliger method replaced by alternative formulas as given in swisstopo document "swissprojectionen".