New transformation and reduction formulae for double q-Clausen series

The Sears transformations for non-terminating 3ϕ2-series are applied to derive several general series transformations for another two double q-Clausen series of type Φ2:0;μ1:2;λ and Φ2:0;μ0:3;λ. Further new transformations and reduction formulae are established for the basic Clausen hypergeometric series. In particular, several bibasic reduction formulae are obtained.