[1] Coddington E. A., Levinson N.: Theory of Ordinary Differential Equations. New York 1955. MR 0069338 | Zbl 0064.33002

[2] Feller W.: The Parabolic Differential Equation and the Associated Semi-groups of Transformations. Annals of Mathematics 55 (1952), 468-519. DOI 10.2307/1969644 | MR 0047886

[3] Hille E.: The Abstract Cauchy Problem and Cauchy's Problem for Parabolic Differential Equations. Journal d'Analyse Mathématique 3 (1953-54), 81-196. MR 0062934

[4] Mandl P.: Les propriétés limites des répartitions de probabilité des processus de Markov bornés. Transactions of the second Prague conference on information theory. Praha I960. Zbl 0099.12004

[5] Mandl P.: Rozložení doby prvého překročení jedné hranice procesem Uhlenbecka. Aplikace matematiky. (To be published.)