1. Abdullaev, R.N., Khaletskaya, O.N., 1970. Stratigraphy and faunas of the Lower Palaeozoic of Uzbekhistan: I. Lower Palaeozoic of the Chatkal Range. FAN Publishing House, Academy of Sciences Uzbekh SSR, 87 pp.
2. The lichid trilobite Borealarges n.gen. with species from the Silurian of Arctic Canada;Adrain;Journal of Paleontology,1994
3. Balizoma and the new genera Aegrotocatellus and Perirehaedulus: encrinurid trilobites from the Douro Formation (Silurian, Ludlow) of the central Canadian Arctic;Adrain;Journal of Paleontology,1995
4. Ordovician trilobites from the Tourmakeady limestone, western Ireland;Adrain;Bulletin of the British Museum, Natural History. Geology,1997
5. Phacopid trilobites from the Silurian of Arctic Canada;Adrain;Journal of Paleontology,1996