ARYA, S., RAJU, R., ARUNRAJ, P. T., VISHNU, W. K., BIJU, P., & ANILKUMAR, V. N. S. (2020). Utricularia kamarudeenii (Lentibulariaceae): a new species from Kerala, India. Phytotaxa, 447(1), 68-72.
Biju, P., Josekutty, E.J., Kambale, S.S., Augustine, J., & Bruyns, P.V. (2020). A new species of Ceropegia (Apocynaceae) from northern Kerala, India. Phytotaxa
Biju P., Josekutty E.J., Janarthanam M.K., & A., Jomy. (2020). Utricularia sainthomia (Lentibulariaceae), a new remarkable carnivorous species from the lateritic plateau of northern Kerala, India. RHEEDEA ,30(2): 270–277.
Biju, P., Josekutty, E. J., & Augustine, J. (2018). Eriocaulon albotetrandra, a remarkable new species of Eriocaulaceae from the ponds in the lateritic plateau of Western Ghats, India. Webbia, 73(1), 1-4.
Biju, P., Josekutty, E. J., & Augustine, J. (2018, May). Lagenandra cherupuzhica (Araceae), a new species from Kerala, India. In Annales Botanici Fennici (Vol. 55, No. 1–3, pp. 139-143). Finnish Zoological and Botanical Publishing Board.