Alcock, L.; Alcock, E. A. Reconnaissance Excavations on Early Historic Fortifications and Other Royal Sites in Scotland, 1974-84; 5: A, Excavations & Other Fieldwork at Forteviot, Perthshire, 1981; B, Excavations at Urquhart Castle, Inverness-Shire, 1983; C, Excavations at Dunnottar, Kincardineshire, 1984. PSAS 1993, 122, 215-287.