Bogach, A.; Bogomolov, L.; Glushkov, V.; Demishev, S.; Sluchanko, D.; Sluchanko, N.; Shitsevalova, N.; Levchenko, A.; Filipov, V.; Flachbart, K.; Siemensmeyer, K.: Bulk and local magnetic susceptibility of ErB12. Acta Physica Polonica A 113 (2008), p. 271-274
http://przyrbwn.icm.edu.pl/APP/PDF/113/a113z1066.pdf