1. Bergan, frank1960 a simple method of determination of the relative function of the right and left lung. Acta. Chirugica scand. Suppl 253. 58-63
2. singh hd. And krishnamurthyg. 1981. Mean expiratory flow-volume curve ind, j, phy. Pharmacy. 25.1. 85-88
3. ofenn Wallace and rahn, herman1965 effect of posture on lung volumes and sub divisions. Hand book of physiology. Respiration vol11. Sec3. American physiological society Washington DC 1965. 1363-1365
4. hazellet 1971 a simple inexpensive accurate method of studying separate functions of lung chest 59.3.276-279
5. marion jm. Anderson.po. lefrac ss. Seniorrm and jacobmh1976 unilateral lung function. Comparison of latrealposition test with radionuclide. Ventilation perfusion studies chest 69. 1. 59.
6. Stephen j.jay.robertb.stone hill. Saleem o. kiblawi and Norton james1980 variability of lpt in normals. amer. Rev. resp dis 121 1. 165-188
7. walkup. Roberth. 1980 prediction of postoperative pulmonary function with LPT.chest.77.1.24-27
8. solomon.david a.1981 use of LPT and perfusion of lung scanin predicting mediatinal metastases
9. cooper.kevinr. 1981 reliability of lateral position test chest 79,4.494-49.5