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Christoph Helsper
(42)
H. J. Fißan
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Article (42)
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Calibration of the Polytec HC-15 and HC-70 Optical Particle Counters / Fißan, H. J. ; Helsper, C.
(1983)
Christoph Helsper
;
H. J. Fißan
Kalibrierung der Partikelgrößenbestimmung von optischen Partikelzählern / Fißan, H. J.; Helsper, C. ; Kasper, W.
(1984)
Christoph Helsper
;
H. J. Fißan
;
W. Kasper
Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R.; Helsper, C.; Rönicke, G.
(1984)
Christoph Helsper
;
R. Nießner
;
G. Rönicke
Determination of Particle Size Distributions by Means of an Electrostatic Classifier / Fißan, H. J.; Helsper, C. ; Thielen, H. J.
(1983)
Christoph Helsper
;
H. J. Fißan
;
H. J. Thielen
Calibration of Optical Particle Counters with Respect to Particle Size / Fißan, H. J. ; Helsper, C.; Kasper, W.
(1984)
Christoph Helsper
;
H. J. Fißan
;
W. Kasper
Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R. ; Helsper, C.
(1985)
Christoph Helsper
;
R. Nießner
Response Characteristics for Four Condensation Nucleus Counters to Particles in the 3 to 50 nm Diameter Range / Bartz, H. ; Fißan, H. J. ; Helsper, C.; Kousaka, Y. ; Okuyama, K. ; Keady, R. Fruin, S. ; McMurry, P. H.; Pui, D. Y. H. ; Stolzenburg, M. R.
(1985)
Christoph Helsper
;
H. Bartz
;
H. J. Fißan
;
Y. (u.a.) Kousaka
On the Influence of the Vapour Substance on the Behaviour of an Expansion Type Condensation Nucleus Counter
(1985)
Christoph Helsper
;
R. Nießner
Investigation on the Bipolar Charge Distribution at Various Gas Conditions / Wiedensohler, A.; Lütkemeier, E.; Feldpausch, M. ; Helsper, C.
(1986)
Christoph Helsper
;
A. Wiedensohler
;
E. Lütkemeier
;
M. Feldpausch
Intercomparison of Eleven Condensation Nucleus Counters / Dreiling, V. ; Haller, P. ; Helsper, C.; Kaminski, U. ; Plomp, A. ; Raes, F. ; Roth, C. ; Schier, J. ; Schürmann, G.
(1986)
Christoph Helsper
;
V. Dreiling
;
P. Haller
;
U. Kaminski
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