@article{RSMUP_2000__103__211_0,
     author = {Leonardi, Gian Paolo},
     title = {Blow-up of oriented boundaries},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {211--232},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {103},
     year = {2000},
     mrnumber = {1789540},
     zbl = {0977.49030},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_2000__103__211_0/}
}