Duan, Z., X. Zhang, G-X. Zhu, Y. Gao, and X. Xue. 2013. “Activation of MGluR4 Promotes Proliferation of Rat Neural Progenitor Cells While Mediating Activation of ERK1/2 Signaling Pathway”. Cellular and Molecular Biology 59 (2):1809-17. https://cellmolbiol.org/index.php/CMB/article/view/462.