@article{BSMF_2005__133_3_349_0,
     author = {Fernando, Jos\'e F. and Ruiz, Jes\'us M.},
     title = {On the {Pythagoras} numbers of real analytic set germs},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {349--362},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {133},
     number = {3},
     year = {2005},
     doi = {10.24033/bsmf.2490},
     mrnumber = {2169822},
     zbl = {1095.14056},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.2490/}
}