HUTTENLOCHER, PR. Synaptic density in human frontal cortex ; Developmental changes and effects of aging. Brain Res. 1975, 163, 195-205
LUND, JS. Development of neurons in the visual cortex (area 17) of the monkey (Macaca nemastrina) : A Golgi study from fetal day 127 to maturity. J Comp Neur. 1977, 176, 149-187