@article{article59148871,
title   = {Virasoro action on imaginary verma modules and the operator form of the KZ-equation},
author = {Cox, Ben L and Futorny, Vyacheslav and Martins, Renato A},
year = {2012},
doi = {10.1007/s11005-012-0580-7},
journal   = {Letters in Mathematical Physics}
}