@article{dadashev,
  AUTHOR =	 {Dadashev, L. A.},
  TITLE =	 {Axiomatics of the {G}alilei-invariant quantum field
                  theory},
  JOURNAL =	 {Akademiya Nauk SSSR. Teoreticheskaya i
                  Matematicheskaya Fizika},
  VOLUME =	 64,
  YEAR =	 1985,
  NUMBER =	 3,
  PAGES =	 {383--399}
}

@incollection{levy71,
  AUTHOR =	 {L{\'e}vy-Leblond, Jean-Marc},
  TITLE =	 {Galilei group and {G}alilean invariance},
  BOOKTITLE =	 {Group theory and its applications, Vol. II},
  PAGES =	 {221--299},
  PUBLISHER =	 {Academic Press},
  ADDRESS =	 {New York},
  YEAR =	 1971
}

@article{levy63,
  AUTHOR =	 {L{\'e}vy-Leblond, Jean-Marc},
  TITLE =	 {Galilei group and nonrelativistic quantum mechanics},
  JOURNAL =	 {J. Mathematical Phys.},
  VOLUME =	 4,
  YEAR =	 1963,
  PAGES =	 {776--788}
}

@article{levy,
  author =	 {L{\'e}vy-Leblond, Jean-Marc},
  title =	 {Galilean quantum field theories and a ghostless
                  {L}ee model},
  journal =	 {Commun. Math. Phys.},
  volume =	 4,
  pages =	 145,
  year =	 1967
}