Discrete Logarithms: The Effectiveness of the Index Calculus Method. - Oliver Schirokauer; Damian Weber; Thomas F. Denny (ANTS, 1996)

Using number fields to compute logarithms in finite fields. - Oliver Schirokauer (Math. Comput., 2000)

The Special Function Field Sieve. - Oliver Schirokauer (SIAM J. Discret. Math., 2002)

Virtual logarithms. - Oliver Schirokauer (J. Algorithms, 2005)

The number field sieve for integers of low weight. - Oliver Schirokauer (Math. Comput., 2010)