@article{701696,
     title = {$T$-semisymmetric spaces and concircular vector fields},
     booktitle = {Proceedings of the 21st Winter School "Geometry and Physics"},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {2002},
     pages = {[187]-193},
     mrnumber = {MR1972434},
     zbl = {1023.53014},
     url = {http://dml.mathdoc.fr/item/701696}
}

Mikeš, Josef; Rachůnek, Lukáš. $T$-semisymmetric spaces and concircular vector fields, dans Proceedings of the 21st Winter School "Geometry and Physics", GDML_Books,  (2002), pp. [187]-193. http://gdmltest.u-ga.fr/item/701696/