Usable Recursive Queries. - Tomasz Pieciukiewicz; Krzysztof Stencel; Kazimierz Subieta (ADBIS, 2005)

Object-Oriented Programming with Recursive Queries. - Tomasz Pieciukiewicz; Krzysztof Stencel; Kazimierz Subieta (Databases and Applications, 2006)

Overview of the Project ODRA. - Radoslaw Adamus; Piotr Habela; Krzysztof Kaczmarski; Tomasz Marek Kowalski; Michal Lentner; Tomasz Pieciukiewicz; Krzysztof Stencel; Kazimierz Subieta; Mariusz Trzaska; Jacek Wislicki (ICOODB, 2008)

Recursive Query Processing in SBQL. - Tomasz Pieciukiewicz; Kazimierz Subieta; Krzysztof Stencel (ICOODB, 2008)