CRUMLIN-PEDERSEN, O. & O. OLSEN, eds. The Skuldelev Ships I. 2002. 4°. Obrds. -- F. SCHOFIELD. Humber keels and keelman. 1988. Obrds. w. dust-j. -- D.J. DAVIS. The Thames sailing barge. Her gear and rigging. 1977. Obrds. w. dust-j. -- E.J. MARCH. Spritsail barges of Thames and Medway. (1981). Obrds. w. dust-j. -- H. MENZEL. Smakken, Kuffen, Galioten. Drei fast vergessene Schiffstypen des 18. und 19. Jh. (1997). 4°. Obrds. w. dust-j. -- And 9 o. (14).