Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Schwehm, G. and Langevin, Y. and European Space Agency","Rosetta/CNSR, a Comet-Nucleus Sample-Return Mission : mission & system definition document",,ESA Publications Division,1991,ESA SP,,9290920726,,https://cir.nii.ac.jp/crid/1130282271198785920