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>Caspar Wessel. On the Analytical Representation of Direction. An Attempt Chiefly to Solving Plane and Spherical Polygons (1797) Bodil Branner and Jesper Lützen, Eds. Copenhagen (Matematik-fysiske Meddelser 46:1), 1999
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Caspar Wessel. On the Analytical Representation of Direction. An Attempt Chiefly to Solving Plane and Spherical Polygons (1797) Bodil Branner and Jesper Lützen, Eds. Copenhagen (Matematik-fysiske Meddelser 46:1), 1999
