Рибін, О., Ю. Ніжебецька, and А. Луцків. “Authentification of Person on the Dinamically Entered Signature at the Use of Normal Transformation”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 40, Aug. 2010, pp. 26-30, doi:10.20535/RADAP.2010.40.26-30.