@article{10_4064_fm174_1_1,
     author = {Saharon Shelah and Pauli Vaisanen},
     title = {On equivalence relations second order definable over $H(\kappa)$},
     journal = {Fundamenta Mathematicae},
     pages = {1--21},
     publisher = {mathdoc},
     volume = {174},
     number = {1},
     year = {2002},
     doi = {10.4064/fm174-1-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm174-1-1/}
}