by Hellström, Christian, Mikkola, Seppo
Published in Celestial mechanics and dynamical astronomy (01.02.2010)

by Magalhães, Manuela, Hellström, Christian
Published in Journal of macroeconomics (01.09.2013)

by Hellström, Christian, Mikkola, Seppo
Published in New astronomy (01.10.2009)

by Hellström, Christian, Mikkola, Seppo
Published in New astronomy (01.07.2009)

by Hellström, Christian
Published in Albanian journal of mathematics (15.12.2010)

by STENDAHL, KJELL ERIK, HELLSTROM, BENGT LOUIS CHRISTIAN, STEEN, BILLY DENNIS
Year of Publication 30.12.1986

by STENDAHL, KJELL ERIK, HELLSTROM, BENGT LOUIS CHRISTIAN, STEEN, BILLY DENNIS
Year of Publication 13.06.1984