@book{greiner:1985:qes,
    author = {Greiner, W. and M\"uller, B. and Rafelski, J.},
     title = {Quantum Electrodynamics of Strong Fields:
         With an Introduction into Modern Relativistic Quantum Mechanics},
    series = {Texts and Monographs in Physics},
      year = {1985},
 publisher = {Springer}}