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2. Late Quaternary paleomagnetic stratigraphy from east-central Lake Ontario;Anderson;Geol. Surv. Canada Paper,1976
3. Geomagnetic record in Minnesota lake sediments — Absence of Gothenburg and Erieau excursions;Banerjee;Geology,1979
4. L'aimantation des lavas de l'Etna et orientation du champs terreste en Sicile du 12 eau 17 e siecle;Chevallier;Ann. Phys. Ser. 10,1965
5. An objective method for smoothing paleomagnetic data;Clark;R. Astron. Soc., Geophys. J.,1978