Pieri's Structures. - Rafal Gruszczynski; Andrzej Pietruszczak (Fundam. Informaticae, 2007)

Full Development of Tarski's Geometry of Solids. - Rafal Gruszczynski; Andrzej Pietruszczak (Bull. Symb. Log., 2008)

Point-Free Geometry, ovals, and half-planes. - Giangiacomo Gerla; Rafal Gruszczynski (Rev. Symb. Log., 2017)

A Study in Grzegorczyk Point-Free Topology Part I: Separation and Grzegorczyk Structures. - Rafal Gruszczynski; Andrzej Pietruszczak (Stud Logica, 2018)

A Study in Grzegorczyk Point-Free Topology Part II: Spaces of Points. - Rafal Gruszczynski; Andrzej Pietruszczak (Stud Logica, 2019)

Grzegorczyk Points and filters in Boolean contact Algebras. - Rafal Gruszczynski; Andrzej Pietruszczak (Rev. Symb. Log., 2023)

From Contact Relations to Modal Operators, and Back. - Rafal Gruszczynski; Paula Menchón (Stud Logica, 2023)

Grzegorczyk and Whitehead Points: The Story Continues. - Rafal Gruszczynski; Santiago Jockwich Martinez (J. Philos. Log., 2024)

Conditional algebras. - Sergio A. Celani; Rafal Gruszczynski; Paula Menchón (Ann. Pure Appl. Log., 2025)

The Sum Relation as a Primitive Concept of Mereology. - Rafal Gruszczynski; Dazhu Li (Stud Logica, 2025)