ett års doktorandsstudier vid Göteborgs och Stockholms universitet
kurser i framtidsstudier, internationella affärer, numerisk talteori
30 poäng inom ormådet datasäkerhet vid Stockholms universitet
1978, Submission to N. J. A. Sloan's "Handbook of Integer Sequences" Submission now included in "Sloane's On-Line Encyclopedia of Integer Sequences" located in AT&T Research Labs' site at http://www.research.att.com/~njas/sequences/. The entry now included there is:
%I A003418 M1590 %S A003418 1,2,6,12,60,60,420,840,2520,2520,27720,27720,360360,360360,360360, %T A003418 720720,12252240,12252240,232792560,232792560,232792560,232792560, %U A003418 5354228880,5354228880,26771144400,26771144400,80313433200,80313433200 %N A003418 Least common multiple of 1,2, ..., n. %R A003418 MSC 39 275 1976. %O A003418 1,2 %K A003418 nonn,easy,nice
1984, Finding Vowels in Simple Substitution Ciphers by Computer. Cryptologia. 8: 348-358
1986, Improving the Machine Recognition of Vowels in Simple Substitution Ciphers. Cryptologia. 10: 10-22
1989, Cryptanalytic Properties of Short Substitution Ciphers. Cryptologia. 13: 61-72
1989, Recognizing Complete and Partial Plaintext. Cryptologia. 13: 161-167
1991, Extending the Concept of Interval. Cryptologia. 15: 314-324
The first two of these articles above have been reprinted in the following book: