M.F. Álvarez, W. Aragort, J.M. Leiro, M.L. Sanmartín. Macroparasites of five species of ray (genus Raja) on the northwest coast of Spain // Diseases of Aquatic Organisms. — 2006. — Vol. 70, № 1-2. — P. 93—100. — ISSN0177-5103. — doi:10.3354/dao070093.
M.F. Álvarez, W. Aragort, J.M. Leiro, M.L. Sanmartín. Macroparasites of five species of ray (genus Raja) on the northwest coast of Spain // Diseases of Aquatic Organisms. — 2006. — Vol. 70, № 1-2. — P. 93—100. — ISSN0177-5103. — doi:10.3354/dao070093.