Ghosh, Pradip N., Biswajit Ray, Ayan Ray, Srabana Chakraborty, and Amitava Bandyopadhyay. 2005. “Cooling and Trapping Rb Atoms on The Gas Phase at Calcutta University”. Indian Science Cruiser 19 (5):41-41. https://informaticsjournals.com/index.php/ISC/article/view/38559.