@article{01184260, title = {When is an equivalance relation classifiable.}, journal = {Documenta Mathematica}, year = {1998}, pages = {23-32}, zbl = {0899.04002}, language = {en}, url = {http://dml.mathdoc.fr/item/01184260} }
Hjorth, Greg. When is an equivalance relation classifiable.. Documenta Mathematica, (1998), pp. 23-32. http://gdmltest.u-ga.fr/item/01184260/