@techreport{MeyerSteinkeBrandletal.2000, author = {Michael Meyer and Thomas Steinke and Maria Brandl and J{\"u}rgen S{\"u}hnel}, title = {Density functional study of guanine and uracil quartets and of guanine quartet metal/ion complexes}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {00-16}, language = {eng}, year = {2000} }