@article {mcninch13:MR3009659,
    AUTHOR = {McNinch, George},
     TITLE = {On the descent of {L}evi factors},
   JOURNAL = {Arch. Math. (Basel)},
  FJOURNAL = {Archiv der Mathematik},
    VOLUME = 100,
      YEAR = 2013,
    NUMBER = 1,
     PAGES = {7--24},
      OPTISSN = {0003-889X},
   MRCLASS = {20G15},
  optMRNUMBER = 3009659,
       OPTDOI = {10.1007/s00013-012-0467-y},
       OPTURL = {http://dx.doi.org/10.1007/s00013-012-0467-y},
}