Shortest division chains in imaginaryquadratic number fieldsHeinrich Rolletschek · 1990

Some New Lattice Constructions in High R. E. DegreesHeinrich Rolletschek · 1995

Complexity of certain decision problems about congruential languagesPaliath Narendran; Colm Ó'Dúnlaing; Heinrich Rolletschek · 1985

Computing Gretest Common Divisors and Factorizations in Quadratic Number FieldsErich Kaltofen and Heinrich Rolletschek · Mathematics of Computation · 1989

Computing greatest common divisors and factorizations in quadratic number fieldsKaltofen, Erich; Rolletschek, Heinrich · Mathematics of Computation · 1989

Closure properties of almost-finiteness classes in recursive function theoryRolletschek, Heinrich · The Journal of Symbolic Logic · 1983

On the Number of Divisions of the Euclidean Algorithm Applied to Gaussian IntegersHeinrich Rolletschek · 1986