%0 Journal Article %A A. I. Medianik %T Antipodal $n$-angles inscribed into the regular $(2n-1)$-angle and half-circulant Hadamard matrices of order $4n$ %J Žurnal matematičeskoj fiziki, analiza, geometrii %D 2004 %P 45-66 %V 11 %N 1 %U http://geodesic.mathdoc.fr/item/JMAG_2004_11_1_a2/ %G ru %F JMAG_2004_11_1_a2