Words and Proper Names

r [marginal .r.]

496.
Melia (Daniel Frederick): Further speculation on marginal .r.
In Celtica 21 (1990), pp. 362–367.
2778.
O’Rahilly (Cecile): Five notes: [5.] Marginal .r.
In Celtica 10 (1973), pp. 148–150.
Suggests that marginal .r. was sometimes used to denote passages of oral origin memorised by scribes.
11285.
Melia (Daniel F.): On the origins of LU's marginal .r.
In Celtic florilegium [O Hehir studies] (1996), pp. 138–143.