1. Prolongations to higher jets of Estabrook-Wahlquist coverings for PDE's

   • J. D. Finley III
   • John K. McIver

   OriginalPaper Pages: 197 - 225

2. How many diffusions exist on the Vicsek snowflake?

   • Volker Metz

   OriginalPaper Pages: 227 - 241

3. Helmholtz operator with a quaternionic wave number and associated function theory. II. Integral representations

   • V. V. Kravchenko
   • M. V. Shapiro

   OriginalPaper Pages: 243 - 265

4. On the Hierarchy of screw systems

   • P. S. Donelan
   • C. G. Gibson

   OriginalPaper Pages: 267 - 296