Kryvi, H. & Borander, A.K. & Syversen, G. (1981)
Structure and variation in the sarcotubular system of the extraocular muscle fibres in the shark Scyliorhinus canicula L. Zoologica Scripta, 10(3), 217–221
DOI: 10.1111/j.1463-6409.1981.tb00497.x