Ghosh A, Mondal S, Islam K, Mal K, Bhattacharyya D, Bandyopadhyay A. Study of Three Level Cascade System: A Complete Analytical Approach. Jour. Atomic Mole. Conden. Nano Phys. 2016;3(2):97-104. doi:10.26713/jamcnp.v3i2.483