Simplified proof and extension of Puig's result on endopermutation sources for bimodules with twisted diagonal vertices inducing stable Morita equivalences.
Puig, Nilpotent blocks and their source algebras, Invent
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On stable equivalences of Morita type with twisted diagonal vertices
Simplified proof and extension of Puig's result on endopermutation sources for bimodules with twisted diagonal vertices inducing stable Morita equivalences.