• Expression of NGF and GDNF family members and their receptors during peripheral nerve development and differentiation of Schwann cells in vitroPiirsoo, Marko; Kaljas, Anne; Tamm, Karin; Timmusk, TõnisNeuroscience letters2010 / 1, p. 135-140 : ill https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2808476/