1. Two new fluorescent retrograde neuronal tracers which are transported over long distances;Bentivoglio;Neurosci. Lett.,1980
2. Ascending and descending axon collaterals from brain stem reticular formation;Bentivoglio;Neurosci. Lett.,1980
3. Some cells of the lower brain stem reticular formation project bilaterally to pons, midbrain, thalamus by means of axon collaterals;Bentivoglio;Neurosci. Lett.,1981
4. Diamidino Yellow dihydrochloride (DY 2HCl): a new fluorescent retrograde neuronal tracer, which migrates only very slowly out of the cell;Keizer;Exp. Brain Res.,1983
5. Anatomy of the descending pathways;Kuypers,1981