Virtual Unreality of Videogames. - Pietro Guardini (PsychNology J., 2003)

Better Game Experience Through Game Metrics: A Rally Videogame Case Study. - Pietro Guardini; Paolo Maninetti (Game Analytics, Maximizing the Value of Player Data, 2013)

Faster is Better: The Speed of Player Character Growth affects Enjoyment and Perceived Competence. - Pietro Guardini; Dalila De Simone; Rossana Actis-Grosso (GHITALY@CHItaly, 2019)