1. Baumgarten, H. G., Björklund, A., Holstein, A. F., Nobin, A.: Chemical degeneration of indoleamine axons in rat brain by 5,6-dihydroxytryptamine. An ultrastructural study. Z. Zellforsch.129, 256?271 (1972)
2. Baumgarten, H. G., Björklund, A., Lachenmayer, L., Nobin, A.: Evaluation of the effects of 5,7-dihydroxytryptamine on serotonin and catecholamine neurons in the rat CNS. Acta physiol. scand. Suppl. 391 (1973).
3. Baumgarten, H. G., Björklund, A., Lachenmayer, L., Nobin, A., Stenevi, U.: Long-lasting selective depletion of brain serotonin by 5,6-dihydroxytryptamine. Acta physiol. scand. Suppl. 373 (1971).
4. Baumgarten, H. G., Lachenmayer, L.: 5,7-Dihydroxytryptamine: Improvement in chemical lesioning of indoleamine neurons in the mammalian brain. Z. Zellforsch.135, 399?414 (1972)
5. Baumgarten, H. G., Schlossberger, H. G.: Effects of 5,6-dihydroxytryptamine on brain monoamine neurons in the rat. In: Serotonin and Behavior, J. Barchas, E. Usdin (ed.), pp. 209?224. New York and London: Academic Press. 1973