by Schlegel, K, Collis, P.N
Published in Journal of atmospheric and solar-terrestrial physics (01.02.1999)

by Collis, P.N., Hargreaves, J.K., Howarth, W.G., White, G.P.
Published in Advances in space research (1997)

by Collis, P. N., Häggström, L., Kaila, K., Rietveld, M. T.
Published in Geophysical research letters (01.06.1991)

by Collis, P.N.
Published in Advances in space research (01.01.1995)

by Collis, P.N.
Published in Journal of atmospheric and solar-terrestrial physics (1997)

by Collis, P.N.
Published in Advances in space research (1996)

by Collis, P.N., Hargreaves, J.K.
Published in Journal of atmospheric and solar-terrestrial physics (1997)

by Collis, P. N., Turunen, T., Turunen, E.
Published in Geophysical research letters (01.02.1988)

by Collis, P.N., Rietveld, M.T., van Eyken, A.P.
Published in Advances in space research (01.01.1994)

by Rietveld, M.T., Collis, P.N., vanEyken, A.P., Løvhaug, U.P.
Published in Journal of atmospheric and terrestrial physics (1996)