Some relevant publications

53. "Simple Expressions for the Chromatic Aberration Coefficients of 2nd Degree in Particle Energy of an Achromatic Quadrupole Doublet", F. W. Martin, Optik 100, 129-132 (1995).

55. "Experimental Compensation of Parasitic Octopole Aberrations in Small-Bore Quadrupole Lenses", F. W. Martin and R. Goloskie, Nucl. Instr. and Meth. B104, 59 (1995).

for a fuller list of publications, consult the listing in Scopus