New Characterizations of Proper Interval Bigraphs and Proper Circular Arc Bigraphs. - Ashok Kumar Das; Ritapa Chakraborty (CALDAM, 2015)

New characterizations of proper interval bigraphs. - Ashok Kumar Das; Ritapa Chakraborty (AKCE Int. J. Graphs Comb., 2015)

Forbidden Subgraphs of Bigraphs of Ferrers Dimension 2. - Ashok Kumar Das; Ritapa Chakraborty (ICTCSDM, 2016)

Graphs and digraphs represented by intervals and circular arcs. - Ashok Kumar Das; Ritapa Chakraborty (Discret. Appl. Math., 2017)