Readers should cite both the Bio-protocol preprint and the original research article where this protocol was used:

Zhang, T, Chen, Y, Zeng, S and Zhu, L(2020). Isolation, culture and identification of primary Müller cells from the macula and peripheral human retina. Bio-protocol Preprint. bio-protocol.org/prep613.
Zhang, T., Zhu, L., Madigan, M. C., Liu, W., Shen, W., Cherepanoff, S., Zhou, F., Zeng, S., Du, J. and Gillies, M. C.(2019). Human macular Müller cells rely more on serine biosynthesis to combat oxidative stress than those from the periphery. eLIFE. DOI: 10.7554/eLife.43598