Mikeš, Josef; Rachůnek, Lukáš: $T$-semisymmetric spaces and concircular vector fields.
(English).
In:
Slovák, Jan
and Čadek, Martin (eds.): Proceedings of the 21st Winter School "Geometry and Physics".
Circolo Matematico di Palermo, Palermo, 2002.
pp. [187]-193
