@Misc{ LusVil14, author = { Lussardi, Luca and Villa, Elena }, title = { A general formula for the anisotropic outer Minkowski content of a set }, journal = { Proc. Roy. Soc. Edinburgh Sect. A }, year = { 2016 }, volume = { 146 }, number = { 2 }, pages = { 393-413 }, URL = { http://cvgmt.sns.it/paper/2415/ }, note = { cvgmt preprint} }