Geodesic
Tangents of conics in Hjelmslev planes over a local ring of even characteristic
Mathematica slovaca, Tome 48 (1998) no. 1, pp. 69-78
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Classification : 51C05, 51E30 
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Chvál, Viliam; Jurga, Rastislav. Tangents of conics in Hjelmslev planes over a local ring of even characteristic. Mathematica slovaca, Tome 48 (1998) no. 1, pp. 69-78. http://geodesic.mathdoc.fr/item/MASLO_1998_48_1_a5/

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