1. FEV6 Is an Acceptable Surrogate for FVC in the Spirometric Diagnosis of Airway Obstruction and Restriction
    Maureen P. SWANNEY, Robert L. JENSEN, David A. CRICHTON, Lutz E. BECKERT, Lauren A. CARDNO, and Robert O. CRAPO;
    Am J Respir Crit Care Med Vol 162. pp 917–919, 2000
  2. Capital Souffle: results of a 2005 public awareness campaign about breath measurements in France
    Collectif Capital Souffle
    Presse Med. 2007 Jun;36(6 Pt 1):824-31. Epub 2007 Apr 19
  3. Pulmonary function in Portuguese firefighters
    Almeida AG, Duarte R, Mieiro L, Paiva AC, Rodrigues AM, Almeida MH, Bárbara C.
    Rev Port Pneumol. 2007 May-Jun;13(3):349-64
  4. Early Dedection of Airflow Obstruction in adult smokers attended in University Clinic
    Marcio A. Martins, Isadora Michels, Bárbara Klitzke
    Chest 2008
  5. Early detection of smoking related chronic obstructive pulmonary disease in Vietnam,
    Duong-Quy S, Hua-Huy T, Mai-Huu-Thanh B, Doan-Thi-Quynh N, Le-Quang K, Nguyen-Van H, Phan-Van D, Tran-Dinh H, Reboud P, Dinh-Xuan AT, Homasson JP,
    Rev Mal Respir. 2009 Mar;26(3):267-74
  6. Measuring FEV6 for Detecting early Airway Obstruction in the Primary Care Setting
    M. KAUFMANN, S. HARTL, K. GEYER, M. K. BREYER, O.C. Burghuber;
    J Respiration DOI: 10.1159/000197466, 2009
  7. Simplified COPD screening: validation of the PiKo-6® in primary care
    Peter Frith, Alan Crockett, Justin Beilby, David Marshall, Robyn Attewell,Avnesh Ratnanesan, Guy Gavagna;
    Prim Care Respir J 2011; 20(2): 190-198
  8. A combination of the IPAG questionnaire and PiKo-6® flow meter is a valuable screening tool for COPD in the primary care setting
    Lazaros Sichletidis, Dionisios Spyratos, Maria Papaioannou, Diamantis Chloros, Anastasios Tsiotsios, Vasiliki Tsagaraki, Anna-Bettina Haidich;
    Prim Care Respir J 2011; 20(2): 184-189