@techreport{Bornemann1990, author = {Folkmar A. Bornemann}, title = {An Adaptive Multilevel Approach to Parabolic Equations I. General Theory \& 1D-Implementation.}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {SC-90-04}, language = {eng}, year = {1990} }