VICTOR an Efficient RSA Hardware Implementation. - Holger Orup; Erik Svendsen; Erik Andreasen (EUROCRYPT, 1990)

A high-radix hardware algorithm for calculating the exponential ME modulo N. - Holger Orup; Peter Kornerup (IEEE Symposium on Computer Arithmetic, 1991)

Simplifying Quotient Determination in High-Radix Modular Multiplication. - Holger Orup (IEEE Symposium on Computer Arithmetic, 1995)