by Steigerwald, D.A., Bhat, J.C., Collins, D., Fletcher, R.M., Holcomb, M.O., Ludowise, M.J., Martin, P.S., Rudaz, S.L.
Published in IEEE journal of selected topics in quantum electronics (01.03.2002)

by Wang, Po-Kang, Ansermet, Jean-Philippe, Rudaz, Serge L., Wang, Zhiyue, Shore, Susan, Slichter, Charles P., Sinfelt, J. H.
Published in Science (American Association for the Advancement of Science) (03.10.1986)

by Rudaz, SL, Ansermet, JP, Wang, PK, Slichter, aC, Sinfelt, JH
Published in Physical review letters (07.01.1985)