and a wrong reference name

Summary.v

@@ -90,7 +90,6 @@ This section provides an overview of the tactics defined throughout the project.
 -[[RUI]] Tadeusz Litak's formalization of W. Ruitenburg JSL 1984 paper "On the Period of Sequences (An(p)) in Intuitionistic Propositional Calculus"
 -[[CMP]] Litak, Tadeusz. "Constructive modalities with provability smack." Leo Esakia on Duality in Modal and Intuitionistic Logics. Springer Netherlands, 2014. 187-216.	
 -[[CML]] Bellin, Gianluigi, Valeria De Paiva, and Eike Ritter. "Extended Curry-Howard correspondence for a basic constructive modal logic." In Proceedings of Methods for Modalities. 2001.
--[[DNM]] Litak, Tadeusz. "Double Negation and Modality" ALCOP 2016.
+-[[DNM]] our manuscript "Negative Translations and Normal Modality"
 
- File "alcop2016slides_corrected_extended.pdf" in the projects repository.
 *)
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