[7] T. H.Maiman, The Laser Inventor: Memoirs of Theodore H. Maiman, Springer (2018)
[8] Nomination Archive. NobelPrize.org. Nobel Media AB 2020.
[9] “A historical perspective on the maser and laser,” presented by Charles Townes, University of California, Berkeley, USA, and Tony Heinz, Columbia Univ., USA, The James P Gordon Symposium during CLEO 2014 in San Jose, California, USA.