Figueiredo, I. & Machado, P.B. & Gordo, L.S. (2005)
Deep-water Sharks Fisheries off the Portuguese Continental Coast. Journal of Northwest Atlantic Fishery Science, 35, 291–298
DOI: 10.2960/J.v35.m495

Machado, P.B. & Pinho, M.R. & Duarte, P.N. (2004)
Trends in the fishery and catch patterns of kitefin shark, Dalatias licha (Bonaterre, 1788), from off Azores, through a GIS spatial analysis. Arquipélago. Life and Marine Sciences, 21A, 43–55

Moura, T. & Figueiredo, I. & Machado, P.B. & Gordo, L.S. (2004)
Growth pattern and reproductive strategy of the holocephalan Chimaera monstrosa along the Portuguese continental slope. Journal of the Marine Biological Association of the United Kingdom, 84(4), 801–804
DOI: 10.1017/S002531540400997Xh

Machado, P.B. & Figueiredo, I. (2000)
A technique for ageing the birdbeak dogfish (Deania calcea Lowe, 1839) from dorsal spines. Fisheries Research, 45(1), 93–98
DOI: 10.1016/S0165-7836(99)00100-9