@article{SIGMA_2014_10_a33,
     author = {D. M. J. Calderbank},
     title = {Integrable {Background} {Geometries}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2014},
     volume = {10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2014_10_a33/}
}