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Mathematica Pannonica
Authors:
Lovejoy S. Das
and
Mohammad Nazrul Islam Khan
toroidal group . Tohoku Math. J . 8 ( 1956 ), 29 – 45 . [8] Matsumoto , K . On lorentzian paracontact manifolds . Bull. of Yamagata Univ. Nat. Sci . 12 ( 1989 ), 151 – 156 . [9] Taleb , K . Almost product structure in principal fibre bundle over