@article{Olazábal:51190,
      author       = "Olazábal, J. M.  and Ferguson, P. A. ",
      title        = "<a
                      href="/search?f=title&p=On%20F%27%20-%20closure%20of%20F%20-%20homogeneous%20groups&sc=1&ln=en">On
                      F' - closure of F - homogeneous groups</a>",
}