Ewert JP (1970). "Neural mechanisms of prey-catching and avoidance behavior in the toad (Bufo bufo L.)". Brain, Behavior and Evolution. 3 (1): 36–56. doi:10.1159/000125462. PMID5535458.
Ewert JP (1967). "[Electric stimulation of the retinal projection field in the midbrain of the terrestrial toad (Bufo bufo L.)]". Pflügers Archiv für die gesamte Physiologie des Menschen und der Tiere (in German). 295 (1): 90–8. doi:10.1007/bf00363907. PMID5237606. S2CID23638837.
Schürg-Pfeiffer, E; Spreckelsen, C; Ewert, JP (1993). "Temporal discharge patterns of tectal and medullary neurons chronically recorded during snapping toward prey in toads Bufo bufo spinosus". Journal of Comparative Physiology A. 173 (3): 363–376. doi:10.1007/BF00212701. S2CID41990022.
Ewert, JP (1971). "Single unit response of the Toad's (Bufo americanus) caudal thalamus to visual objects". Zeitschrift für vergleichende Physiologie. 74: 81–102. doi:10.1007/BF00297792. S2CID27531173.
Weerasuriya, A; Ewert, JP (1981). "Prey-selective neurons in the toad's optic tectum and sensorimotor interfacing: HRP studies and recording experiments". Journal of Comparative Physiology A. 144 (4): 429–434. doi:10.1007/BF01326828. S2CID42307061.
Satou, Masahiko; Ewert, Jörg-Peter (1985). "The antidromic activation of tectal neurons by electrical stimuli applied to the caudal medulla oblongata in the toad, Bufo bufo L". Journal of Comparative Physiology A. 157 (6): 739–748. doi:10.1007/BF01350071. PMID3939244. S2CID24595466.
Lettvin, JY; Maturana, HR; McCulloch, WS; Pitts, WH (1968). "What the frog's eye tells the frog's brain"(PDF). In Corning, William C.; Balaban, Martin (eds.). The Mind: Biological Approaches to its Functions. pp. 233–58. Archived from the original(PDF) on 2011-09-28.
Ewert JP (1970). "Neural mechanisms of prey-catching and avoidance behavior in the toad (Bufo bufo L.)". Brain, Behavior and Evolution. 3 (1): 36–56. doi:10.1159/000125462. PMID5535458.
Ewert JP, Arend B, Becker V, Borchers HW (1979). "Invariants in configurational prey selection by Bufo bufo (L.)". Brain, Behavior and Evolution. 16 (1): 38–51. doi:10.1159/000121822. PMID106924.
Ewert JP (1967). "[Electric stimulation of the retinal projection field in the midbrain of the terrestrial toad (Bufo bufo L.)]". Pflügers Archiv für die gesamte Physiologie des Menschen und der Tiere (in German). 295 (1): 90–8. doi:10.1007/bf00363907. PMID5237606. S2CID23638837.
Satou, Masahiko; Ewert, Jörg-Peter (1985). "The antidromic activation of tectal neurons by electrical stimuli applied to the caudal medulla oblongata in the toad, Bufo bufo L". Journal of Comparative Physiology A. 157 (6): 739–748. doi:10.1007/BF01350071. PMID3939244. S2CID24595466.
Ewert JP (1967). "[Electric stimulation of the retinal projection field in the midbrain of the terrestrial toad (Bufo bufo L.)]". Pflügers Archiv für die gesamte Physiologie des Menschen und der Tiere (in German). 295 (1): 90–8. doi:10.1007/bf00363907. PMID5237606. S2CID23638837.
Schürg-Pfeiffer, E; Spreckelsen, C; Ewert, JP (1993). "Temporal discharge patterns of tectal and medullary neurons chronically recorded during snapping toward prey in toads Bufo bufo spinosus". Journal of Comparative Physiology A. 173 (3): 363–376. doi:10.1007/BF00212701. S2CID41990022.
Ewert, JP (1971). "Single unit response of the Toad's (Bufo americanus) caudal thalamus to visual objects". Zeitschrift für vergleichende Physiologie. 74: 81–102. doi:10.1007/BF00297792. S2CID27531173.
Weerasuriya, A; Ewert, JP (1981). "Prey-selective neurons in the toad's optic tectum and sensorimotor interfacing: HRP studies and recording experiments". Journal of Comparative Physiology A. 144 (4): 429–434. doi:10.1007/BF01326828. S2CID42307061.
Satou, Masahiko; Ewert, Jörg-Peter (1985). "The antidromic activation of tectal neurons by electrical stimuli applied to the caudal medulla oblongata in the toad, Bufo bufo L". Journal of Comparative Physiology A. 157 (6): 739–748. doi:10.1007/BF01350071. PMID3939244. S2CID24595466.
Lettvin, JY; Maturana, HR; McCulloch, WS; Pitts, WH (1968). "What the frog's eye tells the frog's brain"(PDF). In Corning, William C.; Balaban, Martin (eds.). The Mind: Biological Approaches to its Functions. pp. 233–58. Archived from the original(PDF) on 2011-09-28.