Quantitative-morphological changes in neurons and glia in the frontal-lobe of the aging rat /1993/. Peinado MA,  Martínez M, Pedrosa JA, Quesada A, Peinado JM. Anatomical Record. 237 – 1, pp. 104 – 108. Wiley. PMID: 8214636, 1993. ISSN 0003-276X. doi: 10.1002/ar.1092370110.