Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) P. Derrick and T. Sakurai and Takekiyo Matsuo,Characterization of the focal planes of a mass spectrometer using the method of transfer matrices,International Journal of Mass Spectrometry and Ion Processes,0168-1176,Elsevier BV,1989-06-01,91,,41-49,https://cir.nii.ac.jp/crid/1871709542805940992,https://doi.org/10.1016/0168-1176(89)80108-9