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Lovejoy Das, Fiberings on almost r - contact manifolds, Publicationes Mathematicae, Debrecen, Hongrie, 43(1-2)(1993), 1-7.
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Lovejoy Das, On CR - structures and F - structure satisfying , Rocky Mountain Journal of Mathematics, USA, 36(2006), 885-892.
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ScienceOn
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Lovejoy Das and Ram Nivas, Harmonic morphism on almost r - contact metric manifolds, Algebras Group and Geometries 22(2005), 61-68.
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S. Helgason, Differential geometry, Lie groups and symmetric spaces, Academic Press, New York (1978).
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S. Ishihara and K. Yano, On integrability conditions of a structure f satisfying , Quart. J. Math., Oxford Sem (2) IS (1964), 217-222.
DOI
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R. S. Mishra, Structures on a Differentiable Manifold and their Applications, Chandrama Prakashan, 50-A, Balrampur House, Allahabad, India, 1984.
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B. B. Sinha and R. Sharma, On a special quadratic structures on differentiable manifolds, Indian J. Pure Appl. Math., 9(8)(1978), 811-817.
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K. Yano, On a structure defined by a tensor field f of type (1, 1) satisfying , Tensor N. S., 14(1963), 99-109.
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Lovejoy S. Das and Ram Nivas, On differentiable manifolds with [ ](K + 1, 1) - structue, Tensor, N. S., 65(1) (2004), 29-35.
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