1. Lower and Middle Devonian spores of north and central Vestspitsbergen;Allen;Palaeontology,1965
2. New spore finds from Voronezh deposits in the western Tartars;Arkhangelskaya;Minist. Geol. Ochr. Nedr. S.S.S.R.,1960
3. New spore finds from Devonian deposits of the Russian Platform;Arkhangelskaya;Minist. Geol. Ochr. Nedr. S.S.S.R.,1963
4. Das Old Red Gebiet am Moskusoksefjord;Bütler;Medd. Grönland,1959
5. Devonian deposits of central east Greenland;Bütler,1961