@Article{         lyndon1959,
  Author        = "Lyndon, Roger C.",
  date-added    = "2020-02-13 22:03:20 +0100",
  date-modified = "2020-02-13 22:03:20 +0100",
  fjournal      = "Pacific Journal of Mathematics",
  Journal       = "Pacific J. Math.",
  Number        = "1",
  Pages         = "143--154",
  Publisher     = "Pacific Journal of Mathematics, A Non-profit Corporation",
  Title         = "Properties preserved under homomorphism.",
  URL           = "https://projecteuclid.org:443/euclid.pjm/1103039459",
  Volume        = "9",
  Year          = "1959",
  bdsk-url-1    = "https://projecteuclid.org:443/euclid.pjm/1103039459",
  File          = "PROPERTIES PRESERVED UNDER HOMOMORPHISM - pjm-v9-n1-p13-p - a - a - a - p.pdf"
}

@Article{ lyndon1959, Author = "Lyndon, Roger C.", date-added = "2020-02-13 22:03:20 +0100", date-modified = "2020-02-13 22:03:20 +0100", fjournal = "Pacific Journal of Mathematics", Journal = "Pacific J. Math.", Number = "1", Pages = "143--154", Publisher = "Pacific Journal of Mathematics, A Non-profit Corporation", Title = "Properties preserved under homomorphism.", URL = "https://projecteuclid.org:443/euclid.pjm/1103039459", Volume = "9", Year = "1959", bdsk-url-1 = "https://projecteuclid.org:443/euclid.pjm/1103039459", File = "PROPERTIES PRESERVED UNDER HOMOMORPHISM - pjm-v9-n1-p13-p - a - a - a - p.pdf" }