Authors: Popov, LE Vinn, O Nikitina, OI

Citation: Le. Popov et al., Brachiopods of the Redefined Family Tritoechiidae from the Ordovician of Kazakhstan and South Urals, GEOBIOS, 34(2), 2001, pp. 131-155

Authors: Vinn, O Spjeldnaes, N

Citation: O. Vinn et N. Spjeldnaes, Clitambonitoid brachiopods from the Middle and Upper Ordovician of the Oslo Region, Norway, NORSK GEOL, 80(4), 2000, pp. 275-288

Authors: Vinn, O Rubel, M

Citation: O. Vinn et M. Rubel, The spondylium and related structures in the clitambonitidine brachiopods, J PALEONTOL, 74(3), 2000, pp. 439-443