Guillaume M. et, al,
Bibliographic info:
In "Ventilation and infiltration in dwellings" proceedings of C. I.B. steering group S17 meeting "Heating and climatisation" Holzkirchen September 1977, 68-93

Describes measurements made to compare ventilation rates in six Belgian houses with both natural and mechanical ventilation systems using O2 and N2O as tracer gases. Ventilation rates were correlated with wind speed. Air leakage across individual components of the house was measured and from this the distribution of leakage areas calculated.