author = {Heinrich Rolletschek},
title = {{Some New Lattice-Theoretic Constructions in High R.E. Degrees}},
number = {93-35},
year = {1993},
note = {Published in Submitted for publication.},
sponsor = { Austrian Science Foundation (FWF) project no.\ P7220.},
type = {RISC Report Series},
institution = {Research Institute for Symbolic Computation (RISC), Johannes Kepler University Linz},
address = {Schloss Hagenberg, 4232 Hagenberg, Austria}