Foundations of geomagnetism. :xiv,369p.., Cambridge England ; New York: Cambridge University Press AbstractWebsite

1996. Foundations of geomagnetism. :xiv,369p.., Cambridge ; New York: Cambridge University Press AbstractWebsite

2005. Frozen-flux modelling for epochs 1915 and 1980. Geophysical Journal International. 128:434-450. 10.1111/j.1365-246X.1997.tb01566.x AbstractWebsite

1997.