51. Malamel, J. J., Prajapati, D. A., Sudhikumar, A. V. & Sebastian, P. A. (2010)
    Two new species of the tribe Ballini Banks, 1892 from India (Araneae: Salticidae).
    Arthropoda Selecta.28(3): 424-434.
52. Sankaran, P. M., Caleb, J. T. D. & Sebastian, P. A. (2010)
    On the taxonomic validity of Indian ground spiders: I. Genus Scopoides Platnick, 1989 (Araneae: Gnaphosidae).
    Zootaxa.4648(1): 155-164.
53. Sudhikumar A.V., J.P. Maelfait, L. Lens & P.A. Sebastian (2009)
    African and Southeast Asian elements in spider fauna of the Western Ghats of India..
    Contributions to Natural History, (Bern).23 (1): 165-175.
54. Sudhikumar A.V., Rudy Jocqué & P.A. Sebastian (2009)
    A new species of the ant spider genus Suffasia (Araneae: Zodariidae) from the Western Ghats, India with a key to the species of the genus.
    Zootaxa.. 2203: 59-64.
55. Sunil Jose K, A.V. Sudhikumar, Samson Davis & P.A. Sebastian (2008)
    Preliminary studies on the spider fauna (Arachnida: Araneae) in Parambikulam wildlife sanctuary in Western Ghats, Kerala, India..
    J. Bombay. Nat. Hist. Soc.105(3): 264-273.
56. Murugesan S., M.J. Mathew, A.V. Sudhikumar, E. Sunish, C.R. Biju & P.A. Sebastian (2006)
    A new species of green lynx spider of the Genus Peucetia Thorell (Araneae: Oxyopidae) from Tamil Nadu, India..
    Entomon.31(4): 287-292.
57. P. A. Sebastian, M. J. Mathew, A. V. Sudhikumar, E. Sunish and S. Murugesan (2006)
    Diversity of spiders in Mangalavanam, an ecosensitive mangrove forest in Cochin, Kerala, India..
    Acta Zoologica Bulgarica.Suppl. (1): 315-318.
58. Sunil Jose K., A.V. Sudhikumar & P.A. Sebastian (2006)
    First record of Perenethis unifasciata (Doleschall) from India (Araneae: Pisauridae)..
    J. Bombay. Nat. Hist. Soc.103(1): 126-129.
59. Sudhikumar. A. V., M. J. Mathew, E. Sunish, S. Murugesan and P. A. Sebastian (2006)
    Preliminary studies on the diversity of spider fauna in Mannavan shola forest, Kerala, India..
    Acta Zoologica Bulgarica.Suppl. (1): 319-327.
60. P.A. Sebastian, M.J. Mathew, S. Pathummal Beevi, John Joseph and C.R. Biju (2005)
    The spider fauna of the irrigated rice ecosystem in central Kerala, India across different elevational ranges..
    Journal of Arachnology.33(2): 247-256.