%0 Journal Article %T Efficient approximation algorithms. Part I: approximation of unknown fault lines from scattered data %A Giampietro Allasia %A Renata Besenghi %A Roberto Cavoretto %A Alessandra De Rossi %J Dolomites Research Notes on Approximation %D 2010 %I Padova University Press %U http://drna.di.univr.it/papers/2010/Allasia.2010.EAA1.pdf