Laitala, Ari. "Summarizing doctoral thesis: Hunt for the green value." In 22nd Annual European Real Estate Society Conference. ERES: Conference. Istanbul, Turkey, 2015.

Laitala, Ari, Juhana Hiironen, Mikael Postila, and Kauko Viitanen. "Value of the energy performance certificates in the housing market - what is the weight as evidence of open data?" In 22nd Annual European Real Estate Society Conference. ERES: Conference. Istanbul, Turkey, 2015.