Home › Authors › Rolf-Peter Holzapfel 👤 Rolf-Peter Holzapfel b. 1942 · 3 books Books by Rolf-Peter Holzapfel The Ball and Some Hilbert Problems (Lectures in Mathematics. ETH Zürich) 2004 Ball and Surface Arithmetics (Aspects of Mathematics) 1996 The ball and some Hilbert problems 1995