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Christoph Helsper (28)
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Representative Dilution of Aerosols by a Factor of 10,000
(1990)
Christoph Helsper
;
W. Mölter
;
P. Haller
Characteristics of a Nebulizer with Cyclone Preseparator / Mölter, W. ; Helsper, C.
(1991)
Christoph Helsper
;
W. Mölter
Erzeugung von Prüfaerosolen für die Kalibrierung von optischen Partikelmeßverfahren nach VDI 3491
(1989)
Christoph Helsper
;
L. Mölter
Charge Distribution by Unipolar Charging of Small Aerosol Particles / Lütkemeier, E. ; Helsper, C. ; Wiedensohler, A.
(1986)
Christoph Helsper
;
E. Lütkemeier
;
A. Wiedensohler
Intercomparison of five mobility size spectrometers for measuring atmospheric submicrometer aerosol particles / Helsper, Christoph ; Horn, Hans-Georg ; Schneider, Friedhelm ; Wehner, Birgit ; Wiedensohler, Alfred
(2008)
Christoph Helsper
;
Hans-Georg Horn
;
Friedhelm Schneider
;
Birgit Wehner
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
Particle Number Distributions of Aerosols from Test Fires
(1980)
Christoph Helsper
;
H. J. Fißan
;
J. Muggli
;
A. Scheidweiler
Verification of Ionization Chamber Theory
(1983)
Christoph Helsper
;
H. J. Fißan
;
J. Muggli
;
A. Scheidweiler
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
Data Inversion by Simplex Minimization for the Electrical Aerosol Analyzer
(1982)
Christoph Helsper
;
H. J. Fißan
;
A. Kapadi
;
B. Y. H. Liu
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