The paper “Eigenvalue estimates for multi-form modified Dirac operators“, co-authored by Jan Gutowski and George Papadopoulos (King’s College London), has been published in the Journal of Geometry and Physics. The paper gives estimates for the eigenvalues of multi-form modified Dirac operators which are constructed from a standard Dirac operator with the addition of a Clifford algebra element associated to a multi-degree form. A link to the published paper is here.