@article{SIGMA_2012_8_a54,
     author = {Sergei Alexandrov and Marc Geiller and Karim Noui},
     title = {Spin foams and canonical quantization},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2012},
     volume = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2012_8_a54/}
}