@article{UhlemannGloeStephanetal.1994,
  author    = {Erhard Uhlemann and Karsten Gloe and Holger Stephan and Olaf Heitzsch and Heinz Bukowsky and Rolf Pollex and Erwin Weber},
  title     = {Preorganized endo-dicarboxylic host macrocycles having superior extraction selectivity for small alkaline earth metal ions},
  year      = {1994},
}