About a scalar Lax type representation for one class of hydrodynamic systems in one dimension / PRYKARPATSKY Ya. A., Prytula M. M., Revenko V., A. // W: The eleventh international colloquium on differential equations : Plovdiv, Bulgaria, August 18–23, 2000 : abstracts of invited lectures and short communications. — [Bulgaria : s. n.], [2000]. — S. [1–2]. — Bibliogr. s. [2]