@article{10_1090_S0894_0347_2011_00712_1,
     author = {Shelah, Saharon},
     title = {Nice infinitary logics},
     journal = {Journal of the American Mathematical Society},
     pages = {395--427},
     publisher = {mathdoc},
     volume = {25},
     number = {2},
     year = {2012},
     doi = {10.1090/S0894-0347-2011-00712-1},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-2011-00712-1/}
}