@article{JEMS_2014_16_2_a4,
     author = {Bruce Allison and Stephen Berman and Arturo Pianzola},
     title = {Multiloop algebras, iterated loop algebras and extended affine {Lie} algebras of nullity 2},
     journal = {Journal of the European Mathematical Society},
     pages = {327--385},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2014},
     doi = {10.4171/jems/435},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/435/}
}