Cherniyat stŭlb na Benesh
Title: Cherniyat stŭlb na Benesh (Bulgarian): The Black Pillar of Benesj
While not concretely tied to the works of this necromancer, it is an apocraphal guide to his system of magic.
The origianl work is first referenced in 1535, uncovered by workers dismantling an older building outside of Alba Iulia.