no. 2
Big pieces of C 1,α -graphs for minimizers of the Mumford-Shah functional
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 29 (2000) no. 2, pp. 329-349. 
@article{ASNSP_2000_4_29_2_329_0,
     author = {Rigot, S\'everine},
     title = {Big pieces of $C^{1, \alpha }$-graphs for minimizers of the Mumford-Shah functional},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {329--349},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 29},
     number = {2},
     year = {2000},
     zbl = {0960.49024},
     language = {en},
     url = {www.numdam.org/item/ASNSP_2000_4_29_2_329_0/}
}
Rigot, Séverine. Big pieces of $C^{1, \alpha }$-graphs for minimizers of the Mumford-Shah functional. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 29 (2000) no. 2, pp. 329-349. http://www.numdam.org/item/ASNSP_2000_4_29_2_329_0/

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