Harkema S, Popescu F, Leloux M. Exploration into the Barriers and Obstacles Constraining Diffusion and Adoption of Renewable Energy Solutions. IJEPT [Internet]. 2015Oct.1 [cited 2025Apr.26];5(5):534-41. Available from: http://ijept.eu/index.php/ijept/article/view/Exploration_into_the_Barriers_and_Obstacles_Constraining_Diffu