Braak, H; Braak, E (1976). «The pyramidal cells of Betz within the cingulate and precentral gigantopyramidal field in the human brain. A Golgi and pigmentarchitectonic study.». Cell and Tissue Research. 172 (1): 103–19. PMID991201. doi:10.1007/bf00226052
Meyer, G (1987). «Forms and spatial arrangement of neurons in the primary motor cortex of man.». The Journal of Comparative Neurology. 262 (3): 402–28. PMID3655019. doi:10.1002/cne.902620306
Rivara, CB; Sherwood, CC; Bouras, C; Hof, PR (2003). «Stereologic characterization and spatial distribution patterns of Betz cells in the human primary motor cortex.». The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology. 270 (2): 137–51. PMID12524689. doi:10.1002/ar.a.10015
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Braak, H; Braak, E (1976). «The pyramidal cells of Betz within the cingulate and precentral gigantopyramidal field in the human brain. A Golgi and pigmentarchitectonic study.». Cell and Tissue Research. 172 (1): 103–19. PMID991201. doi:10.1007/bf00226052
Meyer, G (1987). «Forms and spatial arrangement of neurons in the primary motor cortex of man.». The Journal of Comparative Neurology. 262 (3): 402–28. PMID3655019. doi:10.1002/cne.902620306
Rivara, CB; Sherwood, CC; Bouras, C; Hof, PR (2003). «Stereologic characterization and spatial distribution patterns of Betz cells in the human primary motor cortex.». The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology. 270 (2): 137–51. PMID12524689. doi:10.1002/ar.a.10015