RADOM is a Bulgarian Liulin-type spectrometry-dosimetry instrument, designed to precisely measure cosmic radiation around the Moon. It is installed on the Indian satellite Chandrayaan-1. Another three instruments were deployed on the International Space Station. All Liulin-type instruments are designed and build by the Solar-Terrestrial Influences Laboratory at the Bulgarian Academy of Sciences.
Dachex, Yu.; Dimitrov, F.; Tomov, O.; Matviichuk, Y.; Spurny, F.; Ploc, O.; Brabcova, K.; Jadrnickova, I. (20 December), "Radiation Prot Dosimetry", Oxford Journals of Mathematics & Physical Sciences & Medicine (Oxford University Press) 144: 675–679, doi:10.1093/rpd/ncq506, ISSN 1742-3406, http://rpd.oxfordjournals.org/content/early/2010/12/20/rpd.ncq506.short?rss=1#aff-1