1. Rodriguez-Roisin R, Wagner PD (1989) Clinical relevance of ventilation-perfusion inequality determined by inert gas elimination. Eur Respir J 3: 469–482
2. Wagner PD, Dantzker DR, Dueck R, Clausen JL, West JB (1977) Ventilation-perfusion inequality in chronic obstructive pulmonary disease. J Clin Invest 59: 203–216
3. Dantzker DR (1984) Gas exchange. In: Montenegro HD (ed) Chronic obstructive pulmonary disease. Churchil Livingstone, Edinburg, pp 141–160
4. Glauser FL, Pollaty RC, Sessler CN (1988) Worsening oxygenation in the mechanically ventilated patient. Causes, mechanisms and detection. Am Rev Respir Dis 138: 458–4565
5. Agustí AGN, Barberà JA, Roca J, Wagner PD, Guitart R, Rodriguez-Roisin R (1990) Hypoxic pulmonary vasoconstriction and gas exchange in chronic obstructive pulmonary disease. Chest 97: 268–275