1. 1.  A localisation theorem for Laguerre expansions, Proc. Indian Acad. Sci.,

     Vol. 105, Aug 1995, 303-314.

  1. 2. Analogues of Besicovitch - Wiener theorem for the Heisenberg group,

     jointly with S. Thangavelu, J. Fourier Anal. and Appl. Vol 2, No. 4, 1996,


  1. 3. A restriction theorem for the Heisenberg motion group, jointly with         

     Rama Rawat and S. Thangavelu, Studia Math., Vol 126, No. 1, 1997, 1-12.

  1. 4. Spherical means, wave equations and Hermite - Laguerre expansions,

     jointly with S. Thangavelu, J. Funct. Anal., Vol 154, No. 2, 1998, 253-290.

  1. 5. Gelfand pairs, $K$- spherical means and injectivity on the Heisenberg group,

     jointly with G. Sajith, J. D. Analyse Math., Vol 78, 1999, 245-262.

  1. 6. Spherical maximal operator on constant curvature spaces, jointly with

    Amos Nevo, Trans. AMS, Vol 355, No. 3, 2002, 1167-1182.

  1. 7. Spherical maximal operator on symmetric spaces, an end point estimate,

    Indag. Math., Vol 14, No. 1, 2003, 63-79. 

  1. 8.Schroedinger equation and the oscillatory semi-group for the Hermite operator,

    jointly with A.K. Nandakumaran, J. Funct. Anal., Vol 224, 2005, 371-385.

8’. Corrigendum,  J. Funct. Anal, Vol 224, (2006) 719-720.

  1. 9.On Schroedinger propagator for the special Hermite operator, J. Fourier Anal.

    and Appl., Vol 14, No. 2, 2008, 286-300.

10. Benedick’s theorem for the Heisenberg group,  jointly with E. K. Narayanan,

      Proc. of the Amer Math Soc., Vol 138, No.6, (2010), 2135-2140.

  1. 11.On bilinear Littlewood-Paley square functions, jointly with Saurabh Shrivastava,

      Proc. of the Amer Math Soc, to appear.

12. Spherical means of radial functions, jointly with Ron Kerman, (un published).

13. Strichartz estimates for the Schroedinger equations with the Dunkl Laplacian,

      jointly with S. Ben Said and A.K. Nandakumaran, preprint.

  1. 14.Analyticity of the Schroedinger propagator on the Heisenberg group,  jointly

      with S. Parui and S. Thangavelu, preprint.

15. On Schroedinger propagator for differential operators with discrete spectrum,


16. On a cosine formula for the geometry of rank-1 symmetric spaces, jointly with

      Ritumoni Sarma, (under preparation)

17. A qualitative uncertainty principle for two step nilpotent Lie groups, jointly with

      E. K. Narayanan, (under preparation)

Publication in Conference Proceedings :  

  1. 1. Schroedinger equation,  a  survey on  regularity questions,  J.  Analysis, Vol 17, (2009), 47-59.  ( Proc. of the Symposium on Fourier Analysis and its Applications, held at the Ramanujan Institute for Advanced Study in Mathematics, Chennai, 2009, Published by Forum D’ Analysis, Chennai).