Ilmanen’s lemma on insertion of C 1,1 functions
Rendiconti del Seminario Matematico della Università di Padova, Tome 124 (2010), pp. 203-219. 
@article{RSMUP_2010__124__203_0,
     author = {Fathi, A. and Zavidovique, M.},
     title = {Ilmanen{\textquoteright}s lemma on insertion of {C}$^{1,1}$ functions},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {203--219},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {124},
     year = {2010},
     mrnumber = {2752686},
     zbl = {1210.26013},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2010__124__203_0/}
}
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Fathi, A.; Zavidovique, M. Ilmanen’s lemma on insertion of C$^{1,1}$ functions. Rendiconti del Seminario Matematico della Università di Padova, Tome 124 (2010), pp. 203-219. http://www.numdam.org/item/RSMUP_2010__124__203_0/

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