1. Fertigungsverfahren Band 2;König,1989
2. Neue Erkenntnisse und Entwicklungstendenzen beim Planläppen;Spur,1987
3. Lapping Mechanics of Glass — Especially on Roughness of Lapped Surfaces;Imanaka;Annals of the CIRP,1966
4. Workpiece Material Removal and Lapping Wheel Wear in Plane and Plan Parallel Lapping;Kling;Annals of the CIRP,1986
5. Rapidly Renewable Lap: Theory and Practice;Evans;Annals of the CIRP,1998