AUTHOR=von Steiger Rudolf 

TITLE=Space physics—grand challenges for the 21st century

JOURNAL=Frontiers in Physics

VOLUME=1

YEAR=2013

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2013.00006

DOI=10.3389/fphy.2013.00006

ISSN=2296-424X