02147932

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02147932 Ipolyiov\'a, M\'aria The minimal polynomial of $2\cos\frac{\pi}{p}$ and its application to regular maps of large planar width. Australas. J. Comb. 31, 107-117 (2005). 2005 Published for the Combinatorial Mathematics Society of Australasia by the Centre for Discrete Mathematics and Computing, the University of Queensland, Brisbane, QLD EN