TY - RPRT TI - Intensity coding in the frog retina. Quantitative relations between impulse and graded activity. AU - D A Burkhardt AU - P Whittle PY - 1973 DO - 10.1085/jgp.61.3.305 UR - https://pubmed.ncbi.nlm.nih.gov/4540179/ ID - 4540179 ER -