(en) Norimasa Matsuoka et Hirobumi Suzuki, « Electrophoretic study on the taxonomic relationship of the two morphologically very similar sea-urchins, Echinostrephus aciculatus and E. molaris », Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, vol. 88, no 2, , p. 637–641 (DOI10.1016/0305-0491(87)90356-7, lire en ligne).
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(en) Norimasa Matsuoka et Hirobumi Suzuki, « Electrophoretic study on the taxonomic relationship of the two morphologically very similar sea-urchins, Echinostrephus aciculatus and E. molaris », Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, vol. 88, no 2, , p. 637–641 (DOI10.1016/0305-0491(87)90356-7, lire en ligne).