by Franczuk, S., MacGregor, I.J.D., Ahrens, J., Annand, J.R.M., Arneil, J.F., Beck, R., Branford, D., Grabmayr, P., Hall, S.J., Hehl, T., Harty, P.D., Ireland, D.G., Kellie, J.D., Livingston, K., McGeorge, J.C., Natter, F.A., Oberkirsch, S., Owens, R.O., Powrie, C.J.Y., Ryckebusch, J., Sauer, M., Settele, A., Watts, D.P.
Published in Physics letters. B (1999)