Spur, G.G.SpurMayr, R.R.MayrSchliep, W.W.SchliepKrause, F.-L.F.-L.KrauseMueller, G.G.Mueller2022-03-022022-03-021979https://publica.fraunhofer.de/handle/publica/169030en670621A survey about geometric modelling systemsjournal article