1. Systeme Silurien du centre de la Boheme 1881 6
2. COWIE, J.W., MEDDELELSER OM GRONLAND 164: 34 (1961).
3. COWIE, J.W., QUARTERLY JOURNAL OF THE GEOLOGICAL SOCIETY OF LONDON 120: 255 (1964).
4. KOBAYASHI, T, JOURNAL OF THE FACULTY OF SCIENCE, UNIVERSITY OF TOKYO. SECTION II 9: 123 (1954).
5. KOBAYASHI, T, JOURNAL OF THE FACULTY OF SCIENCE, UNIVERSITY OF TOKYO. SECTION II 9: 183 (1954).