An AGM-type elliptic curve point counting algorithm in characteristic three. - Trond Stølen Gustavsen; Kristian Ranestad (IACR Cryptol. ePrint Arch., 2004)

A Simple Point Counting Algorithm for Hessian Elliptic Curves in Characteristic Three. - Trond Stølen Gustavsen; Kristian Ranestad (Appl. Algebra Eng. Commun. Comput., 2006)

Computing obstructions for existence of connections on modules. - Eivind Eriksen; Trond Stølen Gustavsen (J. Symb. Comput., 2007)