Middle Carboniferous fusulinacean biostratigraphy,Northern Ellesmere Island (Sverdrup Basin,Canadian Arctic Archipelago) / J. R. Groves, W. W. Nassichuk, R. Lin, S. Pinard, 1994. - 55 p. - Текст : непосредственный.
Mamet B.L. Micropaleontological zonation (foraminifers,algae) and stratigraphy,carboniferous peratrovich formation,southeastern Alaska / B. L. Mamet, S. Pinard, A. K. Armstrong, 1993. - 32 p. - Текст : непосредственный.