C. Petit Calvo, «CAVALLAR, Osvaldo; DEGENRING, Susanne y KISCHNER, Julius: A Grammar of Signs. Bartolo da Sassolerrato´s Tract on Insignia and Coats of Arms, Berkeley (Ca.), University of California -Robbins Collection (= Studies in Comparative Legal History), 1994; xv+20», AHDE, n.º 66, nov. 2022.