Gibson, D. I., Costa, G. (1997). Helminth parasites of Madeiran rockpool fishes, with a redescription of Schikhobalotrema longivesiculatum Orecchia & Paggi, 1975 (Digenea: Haplosplanchnidae), and some comments on their zoogeographical relationships. Systematic Parasitology. 38 (1): 73–79.
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Gibson, D. I., Costa, G.
1997
Helminth parasites of Madeiran rockpool fishes, with a redescription of Schikhobalotrema longivesiculatum Orecchia & Paggi, 1975 (Digenea: Haplosplanchnidae), and some comments on their zoogeographical relationships