@Article{jue:18g, author = {A. Seiler and D. Gro\ss{}mann and B. J\"uttler}, title = {Spline surface fitting using normal data and norm-like functions}, journal = {Computer Aided Geometric Design}, year = {2018}, volume = {64}, doi = {10.1016/j.cagd.2018.06.005}, pages = {37-49} }