Fully-scaled 0.25-micron bipolar technology using variable shaped electron-beam lithographyPhilip J. CoaneKaolin G. Chionget al.1993Microlithography 1993
Mixed e-beam/optical lithography process for the fabrication of sub-0.25-μm poly gatesKeith T. KwietniakMichael G. Rosenfieldet al.1993Microlithography 1993