Thome, Johannes; Jacobs, Kerrin A. (August 2004). Attention deficit hyperactivity disorder (ADHD) in a 19th century children's book. European Psychiatry. 19 (5): 303—306. doi:10.1016/j.eurpsy.2004.05.004. PMID15276664.
Bader, Michel; Tannock, Rosemary; Hadjikhani, Nouchine (1 червня 2018). The Zappel-Philipp a historical example of ADHD Clinics. ADHD Attention Deficit and Hyperactivity Disorders. 10 (2): 119—127. doi:10.1007/s12402-017-0239-4. PMID28905267.
Thome, Johannes; Jacobs, Kerrin A. (August 2004). Attention deficit hyperactivity disorder (ADHD) in a 19th century children's book. European Psychiatry. 19 (5): 303—306. doi:10.1016/j.eurpsy.2004.05.004. PMID15276664.
Bader, Michel; Tannock, Rosemary; Hadjikhani, Nouchine (1 червня 2018). The Zappel-Philipp a historical example of ADHD Clinics. ADHD Attention Deficit and Hyperactivity Disorders. 10 (2): 119—127. doi:10.1007/s12402-017-0239-4. PMID28905267.