[1] Bishop, R.L. and O’Neill, B., Manifolds of negative curvature, Trans. Amer. Math. Soc., 145
(1969), 1-49.
[2] Chen, B.Y., Twisted product CR-submanifolds in Kaehler manifolds, Tamsui Oxf. J. Math.
Sci., 16 (2000), 105-121.
[3] Chen, B.Y., Geometry of warped product CR-submanifolds in Kaehler manifolds, Monatsh.
Math., 133 (2001), 177-195.
[4] Chen, B.Y., Geometry of warped product CR-submanifolds in Kaehler manifolds II, Monatsh.
Math., 134 (2001), 103-119.
[5] Fernandez, L.M., Garcia, R.E., Kupeli, D.N. and Unal, B., A curvature condition for a twisted
product to be a warped product, Manuscripta Math., 106 (2001), 213-217.
[6] Gray, A., Nearly Kaehler manifolds, J. Diff. Geom., 4 (1970), 283-309.
[7] Khan, K.A. and Khan, V.A., Totally umbilical CR-submanifolds of a nearly Kaehler manifold,
Geom. Dedicata, 50 (1994), 47-51.
[8] Khan, V.A., Khan, K.A. and Uddin S., Warped product CR-submanifolds of a nearly Kaehler
manifold, SUT Math. J., 43 (2007), 201-213.
[1] Bishop, R.L. and O’Neill, B., Manifolds of negative curvature, Trans. Amer. Math. Soc., 145
(1969), 1-49.
[2] Chen, B.Y., Twisted product CR-submanifolds in Kaehler manifolds, Tamsui Oxf. J. Math.
Sci., 16 (2000), 105-121.
[3] Chen, B.Y., Geometry of warped product CR-submanifolds in Kaehler manifolds, Monatsh.
Math., 133 (2001), 177-195.
[4] Chen, B.Y., Geometry of warped product CR-submanifolds in Kaehler manifolds II, Monatsh.
Math., 134 (2001), 103-119.
[5] Fernandez, L.M., Garcia, R.E., Kupeli, D.N. and Unal, B., A curvature condition for a twisted
product to be a warped product, Manuscripta Math., 106 (2001), 213-217.
[6] Gray, A., Nearly Kaehler manifolds, J. Diff. Geom., 4 (1970), 283-309.
[7] Khan, K.A. and Khan, V.A., Totally umbilical CR-submanifolds of a nearly Kaehler manifold,
Geom. Dedicata, 50 (1994), 47-51.
[8] Khan, V.A., Khan, K.A. and Uddin S., Warped product CR-submanifolds of a nearly Kaehler
manifold, SUT Math. J., 43 (2007), 201-213.