"Naoki Watanabe,Yohko Awaya,Atsushi Fujino,Yoh Itoh,Masashi Kitajima,Takao M Kojima,Masaki Oura,Ryuji Okuma,Mutsumi Sano,Tsuguhisa Sekioka,Tetsuo Koizumi","Photoion-yield spectra of Xe<sup>2+</sup> in the 4d-threshold energy region",,"Journal of Physics B",,"Vol. 31","No. 18","pp. 4137-4142",1998,Sept.