Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIRATA Takehiko,Reinforcement of the Shiftregister Type Cryptosystems based on the Fractionalization of Switching Time,Proceedings of the IEICE General Conference,,"The Institute of Electronics, Information and Communication Engineers",1997-03-06,1997,,255,https://cir.nii.ac.jp/crid/1570572702389405056,