... Download full text in PDF. Tetrahedron Vol 45, No 6, pp 1747 to 1754, 1989 0040-4020189 $3 00+ 00 ... Layer2'i8, so our overall conclusion would be little affected by choice of a different volume element of ... 6. Al-Lohedan,HA,Arab Gulf Scient.Res.Math.Phys.Sci.,1977,A5,2),p.191. ...