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@article{MZ_1974__138_172084, author = {Oddvar Iden}, title = {Natural {Bases} for {Subplanes} of {Free} {Completions.}}, journal = {Mathematische Zeitschrift}, pages = {97--110}, publisher = {mathdoc}, volume = {138}, year = {1974}, zbl = {0272.50023}, url = {http://geodesic.mathdoc.fr/item/MZ_1974__138_172084/} }
Oddvar Iden. Natural Bases for Subplanes of Free Completions.. Mathematische Zeitschrift, Tome 138 (1974), pp. 97-110. http://geodesic.mathdoc.fr/item/MZ_1974__138_172084/