A D0L-T0L Public Key Cryptosystem. - K. G. Subramanian 001; Rani Siromoney; P. J. Abisha (Inf. Process. Lett., 1987)

Encryption-Decryption Techniques for Pictures. - Rani Siromoney; K. G. Subramanian 001; P. J. Abisha (Int. J. Pattern Recognit. Artif. Intell., 1989)

Encryption-Decryption Techniques for Pictures. - Rani Siromoney; K. G. Subramanian 001; P. J. Abisha (Array Grammars, Patterns and Recognizers, 1989)

Generalized Parikh Vector and Public Key Cryptosystems. - Gift Siromoney; Rani Siromoney; K. G. Subramanian 001; V. Rajkumar Dare; P. J. Abisha (A Perspective in Theoretical Computer Science, 1989)

Tree Replacement and Public Key Cryptosystem. - S. C. Samuel; D. Gnanaraj Thomas; P. J. Abisha; K. G. Subramanian 001 (INDOCRYPT, 2002)

Public Key Cryptosystems Based on Free Partially Commutative Monoids and Groups. - P. J. Abisha; D. Gnanaraj Thomas; K. G. Subramanian 001 (INDOCRYPT, 2003)

Line Languages. - K. Sasikala; T. Kalyani; V. Rajkumar Dare; P. J. Abisha (Electron. Notes Discret. Math., 2003)

Triangular Pasting System. - T. Kalyani; K. Sasikala; V. Rajkumar Dare; P. J. Abisha; T. Robinson 001 (Formal Models, Languages and Applications, 2007)

Pattern Generation and Stochastic Table Hexagonal Grammars. - D. Gnanaraj Thomas; S. C. Samuel; P. J. Abisha (IICAI, 2007)

Learning Subclasses of Pure Pattern Languages. - P. J. Abisha; D. Gnanaraj Thomas; Sindhu J. Kumaar (ICGI, 2008)

Learning Subclasses of Parallel Communicating Grammar Systems. - Sindhu J. Kumaar; P. J. Abisha; D. Gnanaraj Thomas (ICGI, 2010)

Parallel Communication Synchronized Pure Pattern Grammar Systems with Filters. - Sindhu J. Kumaar; P. J. Abisha (BIC-TA, 2011)

Simple Splicing Pattern and Pure Pattern Grammar Systems. - Sindhu J. Kumaar; P. J. Abisha; D. Gnanaraj Thomas (BIC-TA, 2011)

A novel cryptosystem based on cooperating distributed grammar systems. - D. Jayaseelan Samuel; P. J. Abisha (Int. J. Artif. Intell. Soft Comput., 2017)