3Ifigeneia Theodoridou, Agis M. Papadopoulos, Manfred Hegger. Statistical analysis of the Greek residential building stock[J]. Energy and Buildings,2011,43(9):2422-2428.
4Ilaria Ballarini, Vincenzo Corrado.Application of energy rating methods to the existing building stock: Analysis of some residential buildings in Turin[J]. Energy and Buildings,2009(41),790-800.