Åberg, T. (1969). Multiple excitation of a many-electron system by photon and electron impact in the sudden approximation. Suomalainen Tiedeakatemia.
Dyfyniad Arddull ChicagoÅberg, Teijo. Multiple Excitation of a Many-electron System by Photon and Electron Impact in the Sudden Approximation. Helsinki: Suomalainen Tiedeakatemia, 1969.
Dyfyniad MLAÅberg, Teijo. Multiple Excitation of a Many-electron System by Photon and Electron Impact in the Sudden Approximation. Suomalainen Tiedeakatemia, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.