Udupi, Aparna, Mruthyunjaya Somasekhara Handigod, and Sathish Madhava Kumar. 2018. “Unidirectional and Bidirectional Coupling of Surface Plasmons Based on Nonperiodic Nano Slit Array”. Photonics Letters of Poland 10 (1):17-19. https://doi.org/10.4302/plp.v10i1.745.