New BooksKarl Britton, Philip Leon, D. J. Allan, J. O. Wisdom, Olaf Helmer, F. C. S. Schiller, A. C. Ewing, A. Gwynn, W. G. de Burgh and John Laird · Mind (New Series) · 1937

Concentration instabilities in liquid chromatographyHelmer, John C. · Analytical Chemistry · 1976

Ponderomotive transport of charge in the induction plasmaHelmer, John C. · 1994

Getter-Ion Pump Employing Penning DischargesHelmer, John C. · Journal of Vacuum Science and Technology · 1969

A theory of measurement with applications to spectrometryJohn C. Helmer · 1980

Separation of seven tricyclic antidepressants using capillary electrophoresisKaren Salomon; Dean S. Burgi; John C. Helmer · 1991

Solution of Clausing’s Integral Equation for Molecular FlowHelmer, John C. · Journal of Vacuum Science and Technology · 1967

Transition gas flow in drag pumps and capillary leaksHelmer, John C. · Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films · 1995