Protection in Grasshopper: A Persistent Operating System. - Alan Dearle; Rex di Bona; James Farrow; Frans A. Henskens; Anders Lindström; Stephen Norris; John Rosenberg; Francis Vaughan (POS, 1994)

Grasshopper: An Orthogonally Persistent Operating System. - Alan Dearle; Rex di Bona; James Farrow; Frans A. Henskens; Anders Lindström; John Rosenberg; Francis Vaughan (Comput. Syst., 1994)