Update README with publication references

Added references to relevant publications and source material.

Author: dgonschorek

README.md

@@ -1,6 +1,10 @@
 # GCL Classifier
 
 A ganglion cell layer (GCL) classifier trained on functional two-photon calcium imaging recordings of mouse retinas in response to chirp and moving bar stimuli.
+The labels and classification are based on Baden, Franke, Berens et al. (2016) "The functional diversity of retinal ganglion cells in the mouse." Nature 529.7586 (2016): 345-350. 
+The classifier was already used in two publictions: 
+1. Qiu, et al. "Efficient coding of natural scenes improves neural system identification." PLoS computational biology 19.4 (2023): e1011037.
+2. Gonschorek, et al. "Nitric oxide modulates contrast suppression in a subset of mouse retinal ganglion cells." Elife 13 (2025): RP98742.
 
 
 # Installation