[1] F. Zítek: Рolarisované grafy. (Polarized graphs.) Lecture at the Czechoslovak Conference on Graph Theory at Štiřín in May 1972.

[2] B. Zelinka: Groups and homogeпeous graphs. Czech. Math. J. 21 (1971), 653 - 660. MR 0289364

[3] B. Zelinka: Isomorphisms of polar and polarized graphs. Czech. Math. J. (to appear). MR 0498288 | Zbl 0341.05121

[4] B. Zelinka: Analoga of Menger's theorem for poíar and polarized graphs. Czech. Math. J. (to appеar).

[5] B. Zelinka: Eulerian polar graphs. Czech. Math. J. (to appear). MR 0505895 | Zbl 0341.05123

[6] B. Zelinka: Polarization of graphs. Czech. Math. J. (to appear). MR 0266805

[7] B. Zelinka: Selbstkomplementäre polare und polarisierte Graphen. Czech. Math. J. (to appеar).

[8] B. Zelinka: Self-derived polar graphs. Czech. Math. J. (to appear). MR 0498290 | Zbl 0341.05124

[9] B. Zelinka: Polar graphs and railway traffic. Aplikace mat. 19 (1974), 169-176. MR 0347346 | Zbl 0283.05116