  
  
  [1XReferences[101X
  
  [[20XBBBC+09[120X]   [16XBallester-Bolinches,   A.,   Beidleman,   J.   C.,  Cossey,  J.,
  Esteban-Romero,  R.,  Ragland,  M.  F. and Schmidt, J.[116X, [17XPermutable subnormal
  subgroups of finite groups[117X, [18XArch. Math.[118X, [19X92[119X (2009), 549-557.
  
  [[20XBBBH03a[120X] [16XBallester-Bolinches, A., Beidleman, J. C. and Heineken, H.[116X, [17XGroups
  in  which Sylow subgroups and subnormal subgroups permute[117X, [18XIllinois J. Math[118X,
  [19X47[119X, 1-2 (2003), 63-69.
  
  [[20XBBBH03b[120X]  [16XBallester-Bolinches,  A.,  Beidleman,  J.  C. and Heineken, H.[116X, [17XA
  local  approach  to  certain classes of finite groups[117X, [18XComm. Algebra[118X, [19X31[119X, 12
  (2003), 5931-5942.
  
  [[20XBBCLER13[120X] [16XBallester-Bolinches, A., Cosme-Llópez, E. and Esteban-Romero, R.[116X,
  [17XAlgorithms  for  permutability in finite groups[117X, [18XCent. Eur. J. Math.[118X, [19X11[119X, 11
  (2013), 1914-1922.
  
  [[20XBBER02[120X]  [16XBallester-Bolinches,  A.  and Esteban-Romero, R.[116X, [17XSylow permutable
  subnormal subgroups of finite groups[117X, [18XJ. Algebra[118X, [19X251[119X, 2 (2002), 727-738.
  
  [[20XBBERA10[120X]   [16XBallester-Bolinches,  A.,  Esteban-Romero,  R.  and  Asaad,  M.[116X,
  [17XProducts of finite groups[117X, Walter de Gruyter, Berlin (2010).
  
  [[20XBBERR07[120X]  [16XBallester-Bolinches,  A.,  Esteban-Romero,  R. and Ragland, M.[116X, [17XA
  note on finite PST-groups[117X, [18XJ. Group Theory[118X, [19X10[119X, 2 (2007), 205-210.
  
  [[20XBBERR09[120X]  [16XBallester-Bolinches,  A.,  Esteban-Romero,  R.  and  Ragland, M.[116X,
  [17XCorrigendum:  A  note  on  finite PST-groups[117X, [18XJ. Group Theory[118X, [19X12[119X, 6 (2009),
  961-963.
  
  [[20XBBR99[120X]  [16XBeidleman, J. C., Brewster, B. and Robinson, D. J. S.[116X, [17XCriteria for
  Permutability  to Be Transitive in Finite Groups[117X, [18XJ. Algebra[118X, [19X222[119X, 2 (1999),
  400-412.
  
  [[20XBH03[120X]  [16XBeidleman,  J.  C.  and  Heineken,  H.[116X,  [17XFinite soluble groups whose
  subnormal  subgroups  permute  with  certain  classes of subgroups[117X, [18XJ. Group
  Theory[118X, [19X6[119X, 2 (2003), 139-158.
  
  [[20XEW03[120X]  [16XEick, B. and Wright, C. R. B.[116X, [17XGAP package FORMAT --- Computing with
  formations   of   finite  solvable  groups  v.~1.3[117X  (2003),  ((Available  on
  https://www.uoregon.edu/~wright/RESEARCH/format/  (last  visited  30th  July
  2015))).
  
  [[20XFog97[120X]  [16XFoguel, T.[116X, [17XConjugate-permutable subgroups[117X, [18XJ. Algebra[118X, [19X191[119X (1997),
  235-239.
  
  [[20XRob68[120X]  [16XRobinson,  D.  J. S.[116X, [17XA note on finite groups in which normality is
  transitive[117X, [18XProc. Amer. Math. Soc.[118X, [19X19[119X (1968), 933-937.
  
  [[20XSch94[120X]  [16XSchmidt,  R.[116X,  [17XSubgroup  lattices  of groups[117X, Walter de Gruyter, De
  Gruyter Expositions in Mathematics, [19X14[119X, Berlin (1994).
  
  
  
  [32X
