@article{10_4007_annals_2010_171_1183,
     author = {Dmitri Burago and Sergei Ivanov},
     title = {Boundary rigidity and filling volume minimality of metrics close to a flat one},
     journal = {Annals of mathematics},
     pages = {1183--1211},
     publisher = {mathdoc},
     volume = {171},
     number = {2},
     year = {2010},
     doi = {10.4007/annals.2010.171.1183},
     mrnumber = {2630062},
     zbl = {1192.53048},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2010.171.1183/}
}