1. Arithmetic of probability laws

   • L. Z. Livshits
   • I. V. Ostrovskii
   • G. P. Chistyakov

   OriginalPaper Pages: 99 - 122

2. Classes of formal grammars

   • A. N. Maslov
   • É. D. Stotskii

   OriginalPaper Pages: 189 - 209