1. Dating of some minor intrusions of Ayrshire;Armstrong;Nature,1957
2. Paleomagnetic study of Polish rocks: The Permian igneous rocks of the Krakow district and some results from the Holy Cross Mountains;Birkenmayer;Ann. Soc. Géol. Pol.,1964
3. Le Dôme permien de Barrot et son auréole de terrains secondaires;Bordet;Bull. Serv. Carte Géol. France, 228,1950
4. Palaeomagnetism of the Exeter lavas, Devonshire;Cornwell;Geophys. J.,1967
5. The direction of the geomagnetic field in remote epochs in Great Britain;Creer;Geomagn. Geoelectr.,1954