Divergent phenotypes among 48,XXXX and 47,XXX females von Telfer, M A, Richardson, C E, Helmken, J, Smith, G F

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Fade slope analysis for Alaska, Florida, and New Mexico ACTS propagation data at 20 and 27.5 GHz von Feil, J., Ippolito, L.J., Helmken, H., Mayer, C.E., Horan, S., Henning, R.E.

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A three-site comparison of fade-duration measurements von Helmken, H., Henning, R.E., Feil, J., Ippolito, L.J., Mayer, C.E.

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A three-site comparison of fade-duration measurements: Ka-band propagation effects on earth-satellite links von HELMKEN, H, HENNING, R. E, FEIL, J, IPPOLITO, L. J, MAYER, C. E

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Fade slope analysis for Alaska, Florida, and New Mexico ACTS propagation data at 20 and 27.5 GHz: Ka-band propagation effects on earth-satellite links von FEIL, J, IPPOLITO, L. J, HELMKEN, H, MAYER, C. E, HORAN, S, HENNING, R. E

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A SEARCH FOR CENTIMETRIC WAVELENGTH EMISSION FROM UV CETI STARS von MOFFETT, THOMAS J., HELMKEN, HEMRU F., SPANGLER, STEVEN R.

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Gas-Čerenkov Detector for 10 to 100 MeV Gamma Rays von Helmken, H., Hoffman, J.

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HELIOS 2-Vela-Ariel 5 gamma-ray burst source position von Cline, T. L., Desai, U. D., Trainor, J., Pizzichini, G., Spizzichino, A., Klebesadel, R., Ricketts, M., Helmken, H.

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Gamma-ray Observations of the Galactic Centre von HELMKEN, H. F, HOFFMAN, J. A

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Variability of LMC X-4 von Epstein, A., Delvaille, J., Helmken, H., Murray, S., Schnopper, H. W., Doxsey, R., Primini, F.

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Gamma-ray burst observations from HELIOS 2 von Cline, T. L., Desai, U. D., Trainor, J. H., Pizzichini, G., Spizzichino, A., Klebesadel, R. W., Helmken, H.

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Gas čerenkov detector for low energy gamma ray astronomy von Helmken, H., Hoffman, J.

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X-ray and radio observations of the structure of Abell 478 von Schnopper, H. W., Delvaille, J. P., Epstein, A., Helmken, H., Harris, D. E., Strom, R. G., Clark, G. W., Jernigan, J. G.

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Evidence for a variable flux of gamma rays exceeding 10 to the 11th power eV from NP 0532 von Grindlay, J. E., Helmken, H. F., Weekes, T. C.

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Search for correlations between giant radio-pulses and 1011 eV gamma-rays from NP 0532 von Argyle, E., Baird, G., Grindlay, J., Helmken, H., O’Mongain, E.

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Compact and diffuse X-ray sources in the core of the Perseus cluster /Abell 426 von Helmken, H., Delvaille, J. P., Epstein, A., Geller, M. J., Schnopper, H. W., Jernigan, J. G.

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Results of a Southern-Hemisphere search for gamma-ray sources at energies of at least 300 GeV von Grindlay, J. E., Helmken, H. F., Brown, R. H., Davis, J., Allen, L. R.

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Evidence for the detection of gamma rays from Centaurus A at gamma-ray energies above 300 GeV von Grindlay, J. E., Helmken, H. F., Brown, R. H., Davis, J., Allen, L. R.

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Performance of a gas-Cherenkov gamma-ray telescope von Koch, D., Ball, S.E., Campbell, M., Delvaille, J.P., Greisen, K., McBreen, B., Fazio, G.G., Hearn, D.R., Helmken, H.F.

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Detection of X-rays from Algol /beta Persei von Schnopper, H. W., Delvaille, J. P., Epstein, A., Helmken, H., Murray, S. S., Clark, G., Jernigan, G., Doxsey, R.

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