Jonas, Peter M., et al. “Differences in Ca(2+) Permeability of AMPA-Type Glutamate Receptor Channels in Neocortical Neurons Caused by Differential GluR-B Subunit Expression.”10.1016/0896-6273(94)90444-8__Neuron, vol. 12, no. 6, Elsevier, 1994, pp. 1281–89, doi:10.1016/0896-6273(94)90444-8.

Hashimoto, Hitoshi, et al. “Molecular Cloning and Tissue Distribution of a Receptor for Pituitary Adenylate Cyclase-Activating Polypeptide.”10.1016/0896-6273(93)90188-W__Neuron, vol. 11, no. 2, Elsevier, 1993, pp. 333–42, doi:10.1016/0896-6273(93)90188-W.

Tanabe, Yasuto, et al. “A Family of Metabotropic Glutamate Receptors.”10.1016/0896-6273(92)90118-W__Neuron, vol. 8, no. 1, Elsevier, 1992, pp. 169–79, doi:10.1016/0896-6273(92)90118-W.

Ishihara, Takeshi, et al. “Functional Expression and Tissue Distribution of a Novel Receptor for Vasoactive Intestinal Polypeptide.”10.1016/0896-6273(92)90101-I__Neuron, vol. 8, no. 4, Elsevier, 1992, pp. 811–19, doi:10.1016/0896-6273(92)90101-I.