Take a look at [MR0271956][1] (42 #6837) Siebenmann, L. C.
Are nontriangulable manifolds triangulable? 1970 Topology of Manifolds (Proc. Inst., Univ. of Georgia, Athens, Ga., 1969) pp. 77–84 Markham, Chicago, Ill.57.01



  [1]: http://www.ams.org/mathscinet/search/publdoc.html?pg1=INDI&s1=161665&vfpref=html&r=28&mx-pid=271956