1. Baldissera F, Hultborn H, Illert M (1981) Integration in spinal neuronal systems. In: Brooks VB (ed) Handbook of physiology, Sect I. The nervous system, Vol II. Motor control. Am Physiol Soc, Bethesda MD, pp 509–595
2. Behrends T, Schomburg ED, Steffens H, (1983a) Group II muscle afferents and low threshold mechanoreceptive skin afferents converging onto interneurons in a common reflex pathway to α-motoneurons. Brain Res 265: 125–128
3. Behrends T, Schomburg ED, Steffens H (1983b) Facilitation of segmental reflex pathways by noxious skin stimulation of the cat's hindpaw. Neurosci Lett [Suppl] 14: S23
4. Brink E, Jankowska E, McCrea DA, Skoog B (1983) Inhibitory interactions between interneurones in reflex pathways from group Ia and group Ib afferents in the cat. J Physiol (Lond) 343: 361–373
5. Eccles RM, Lundberg A (1959) Synaptic actions in motoneurones by afferents which may evoke the flexion reflex. Arch Ital Biol 97: 199–221