The paper “Drinfield basis for string-inspired Baxter operators“, by Andrew Rolph (Cambridge) and Alessandro Torrielli, has been accepted for publication in Physical Review D.  In the paper they propose Drinfield’s second realisation of the quantum group relevant to the Lax-operator approach developed in the work of Bazhanov, Frassek, Lukowski, Meneghelli and Staudacher.  A link to the final form preprint on arXiv is here.