Hays: Papers on Old and Middle Kingdom Mortuary Literature

Hays, H.M. (2002)
The Worshipper and the Worshipped in the Pyramid Texts
Studien zur altägyptischen Kultur, vol. 30

Harold Hays (2004)
Transformation of Context: 

the Field of Rushes in Old and Middle Kingdom Mortuary Literature
Bibliothèque d'Étude

Hays, H.M.;Schenck, W.

Intersection of Ritual Space and Ritual Representation: 

Pyramid Texts in Dynasty 18 Theban Tombs
In SAOC 61. Sacred Space and Sacred Function in Ancient Thebes.
Peter F. Dorman and Betsy M. Bryan, eds.

For SAOC 61 see this post.

Hays, H.M.

The Mutability of Tradition: 

The Old Kingdom Heritage and Middle Kingdom Significance of Coffin Texts Spell 343
Jaarbericht van het Vooraziatisch Egyptisch Genootschap Ex Oriente Lux, vol. 40

Hays, H.M. (2009)
Old Kingdom Sacredotal Texts
Jaarbericht van het Vooraziatisch Egyptisch Genootschap Ex Oriente Lux, vol. 41