by Howard, R.A., Moses, J.D., Socker, D.G., Dere, K.P., Cook, J.W.
Published in Advances in space research (01.06.2002)

by Geis, M.W., Efremow, N.N., Woodhouse, J.D., McAleese, M.D., Marchywka, M., Socker, D.G., Hochedez, J.F.
Published in IEEE electron device letters (01.08.1991)

by Cook, J.W., Socker, D.G., Korendyke, C.M., Howard, R.A., Brueckner, G.E., Karovska, M., Wood, B.E.
Published in Advances in space research (2000)