Absolute continuity on tracks and mappings of Sobolev spaces M Marcus Victor J. Mizel 10.1184/R1/6476756.v1 https://kilthub.cmu.edu/articles/journal_contribution/Absolute_continuity_on_tracks_and_mappings_of_Sobolev_spaces/6476756 Mathematics Technical Report 1971-01-01 00:00:00 Sobolev spaces. Mappings (Mathematics)