DOE:10.1070/MC2005v015n01ABEH002077 DOE:10.1070/PU2008v051n05ABEH006531 DOE:10.1070/QE1997v027n08ABEH001028 DOE:10.1070/QE2000v030n08ABEH001793 DOE:10.1070/QE2003v033n01ABEH002356 DOE:10.1070/QE2013v043n07ABEH015128 DOE:10.1070/RC2009v078n12ABEH004081 DOE:10.1070/RCR4602 DOE:10.1070/RM2004v059n01ABEH000700