Extension of bilipschitz maps of compact polyhedra. Jussi Väisälä; Juha Partanen — 1993 Mathematica Scandinavica
Bilipschitz extensions from smooth manifolds. Taneli Huuskonen; Juha Partanen; Jussi Väisälä — 1995 Revista Matemática Iberoamericana We prove that every compact C-submanifold of R, with or without boundary, has the bilipschitz extension property in R.