Cz. Qu et Aq. Wang, THE COMPLETE-INTEGRABILITY OF VARIABLE-COEFFICIENT BURGERS EQUATIONS, Communications in Theoretical Physics, 26(3), 1996, pp. 369-372
In this paper, we discuss the complete integrability and allowed trans
formations for the variable-coefficient Burgers (VCB) equations which
come from shock waves and sound waves. It is shown that certain condit
ions for which the variable-coefficient functions must satisfy for the
VCB equations to pass the Painleve tests for complete integrability a
re exactly the same as those in order that equations may be transforme
d into the Burgers equation.