Heidrun Weigel

Nutrition of Very Low Birth Weight Infants Fed Human Milk with or without Supplemental Trace Elements: A Randomized Controlled Trial

A. Raab, M. Obladen, P. Brätter, 2004, Journal of pediatric gastroenterology and nutrition.

A Novel Caffeic Acid Derivative and Other Constituents of Populus Bud Excretion and Propolis (Bee-Glue)

U. Lehmann, Y. Asakawa, E. Wollenweber, 1987 .