Circular-Arc Bigraphs and Its Subclasses. - Asim Basu; Sandip Das 001; Shamik Ghosh; Malay K. Sen (J. Graph Theory, 2013)

Permutation bigraphs and interval containments. - Pranab K. Saha; Asim Basu; Malay K. Sen; Douglas B. West (Discret. Appl. Math., 2014)