Handwriting, implements, pens, ball-point, burr striations

Black, D. A. (1970). "Identifying Ball-Point Pens By The Burr Striations." Journal Of Criminal Law, Criminology And Police Science 61: 280-2.
Birmingham University Harding Law Library per K 1.J6

Franks, J. E. (1982). "Direction Of Ball-Point Penstrokes In Left- And Right-Handed Writers As Indicated By The Orientation Of Burr Striations." Journal of the Forensic Science Society 22: 271-4.
Birmingham University Barnes Medical Library per RA 1001.J6F6

Snape, K. W. (1980). "Determination Of The Direction Of Ball-Point Pen Motion From The Orientation Of Burr Striations In Curved Strokes." Journal Of Forensic Sciences 25: 386-9.
Birmingham University Barnes Medical Library per RA 1001.J65 File copy