1.
Woolliscroft D, Hoffmann B. The Roman Gask system tower at Shielhill South, Perthshire: excavations in 1973 and 1996. PSAS [Internet]. 30Nov.1999 [cited 23Sep.2023];128:441-60. Available from: http://journals.socantscot.org/index.php/psas/article/view/10014