1. A methodological approach to rapid and sensitive monoamine histofluorescence using a modified glyoxylic acid technique: The SPG method;de la Torre;Histochemistry,1976
2. Standardization of the SPG histofluorescence method for monoamine transmitters;de la Torre;Soc. Neurosci. Abstr.,1979
3. A simple technique to demonstrate monoamine connections utilizing axonal transport of a fluorescent dye in combination with the glyoxylic acid method;Humbertson;Soc. Neurosci. Abstr.,1979