1. Cobalt;Encyclopedia of Earth Sciences Series;2018
2. Cobalt;Encyclopedia of Earth Sciences Series;2017
3. Cobalt;Encyclopedia of Earth Sciences Series;2016
4. Serum Vitamin B12 Levels in Dairy Cows before and after Parturition;Zentralblatt für Veterinärmedizin Reihe A;2010-05-13
5. Serum Vitamin B12 Levels in Clinically Normal and Ketotic Dairy Cows;Zentralblatt für Veterinärmedizin Reihe A;2010-05-13