Ganguly, P., B. Samanta, S. Das, J. C. Biswas, and S. K. Lahiri. “Design, Fabrication and Preliminary Characterisation of ZkLiNbO, Directional Coupler Switch(Short Communication)”. Defence Science Journal, vol. 52, no. 2, Apr. 2002, pp. 201-3, doi:10.14429/dsj.52.2175.