@book{701622,
title = {Proceedings of the 18th Winter School "Geometry and Physics"},
series = {GDML\_Books},
publisher = {Circolo Matematico di Palermo},
address = {Palermo},
year = {1999},
mrnumber = {MR1692255},
zbl = {0913.00039},
url = {http://dml.mathdoc.fr/item/701622}
}
Slovák, Jan; Čadek, Martin (éd.). Proceedings of the 18th Winter School "Geometry and Physics". GDML_Books (1999), http://gdmltest.u-ga.fr/item/701622/