@article{SIGMA_2010_6_a52,
     author = {Michiyasu Nagasawa},
     title = {Cosmological {Symmetry} {Breaking} and {Generation} of {Electromagnetic} {Field}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2010},
     volume = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2010_6_a52/}
}