Effects of 17α-ethinylestradiol on individual life-history parameters and estimated population growth rates of the freshwater gastropods Radix balthica and Bithynia tentaculata - Per Hallgren; Zaoia Sorita; Olof Berglund; Anders Persson (Ecotoxicology, 2012)

Inheritance Patterns of Phenolics in F1, F2, and Back-Cross Hybrids of Willows: Implications for Herbivore Responses to Hybrid Plants - Per Hallgren; Arsi Ikonen; Joakim Hjältén; Heikki Roininen (Journal of Chemical Ecology, 2003)

Effects of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) on thyroid hormone and vitamin A levels in rats and mice - Sara Hallgren; Taha Sinjari; Helen Håkansson; Per Darnerud (Archives of Toxicology, 2001)