1. G. LEISTNER et al. “Results of Blowdown Experiments Under Boiling Water Conditions at Pressures up to 70 Atm using a Steel Vessel,” Battelle Institut, Frankfurt (June 1969).
2. “Instruction Manual for the Installation, Operation and Maintenance of Penetrometer, Filter Testing, DOP,” U.S. Army Edgewood Arsenal, Instruction Manual 136300-175 A, Maryland.
3. J. PRADEL and J. BRION, “Methode Sensibile de Misure de l’Efficacité des Filtres à Haute Efficacité au Moyen d’un Aerosol d’Uranina,” CEA, SM 110/6, Paris (1968).
4. “British Standard Method of Test for Low Penetration Air Filters,” British Standard Institution, BS 3928, London (1965).