[en] Contacts with resistivities of 10^-8 Ω cm² or less, at temperatures below the T_c of the underlying YBCO material, have been formed by incorporating gold wires into silver contact pads in a single heat treatment. Voltage-current characteristics of these contacts show superconducting behaviour. Microstructural cross-sections show an Ag/Au alloy with an Ag:Au atomic ratio of 3:1. Contacts made by applying wires after the silver heat treatment, which do not form an Ag/Au alloy, show residual resistances below T_c of around 0.5-50 m Ω . Susceptibility and resistivity measurements were not suitable for critically differentiating between contact methods or treatment temperatures. (author)