- Sachin B. Patkar, H.Narayanan, Improving Graph Partitions using
Submodular Functions, (postscript)
- M. P. Desai, H.Narayanan, Sachin B. Patkar, The realization of
finite state machines by decomposition and the Principal Lattice of Partitions
of a Submodular Functions, (postscript)
- Harish K. Pillai, H. Narayanan, On Duality of Behavioural systems,
(postscript)