N. LINDQVIST, U. LÖNNGREN, M. AGUDO, U. NÄPÄNKANGAS, M. VIDAL-SANZ, and F. HALLBÖÖK, “Multiple receptor tyrosine kinases are expressed in adult rat retinal ganglion cells as revealed by single-cell degenerate primer polymerase chain reaction”, ujms, vol. 115, no. 1, pp. 65–80, Mar. 2010.