Home Science Optical and Interpretative Astronomy Publications Publications OPINAS 1973 All years 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 1999 1998 1997 1996 1995 1994 1993 1981 1980 1978 1974 1973 All genres Journal Article (1) Journal Article (1) 1. Journal Article Haerendel, G.: Theory of Equatorial Spread F. (1973) MPG.PuRe