SOJAK, Stanislav et al. PLEPS study of ions implanted RAFM steels. In Journal of Physics: Conference Series : 13th International workshop on Slow Positron Beam Technigues and Applications, SLOPOS 2013, Munich, Germany 15 - 20 September 2013. Vol. 505, iss. 1 (2014), art. no. 012016, [4] p. ISSN 1742-6588 (2014). E*619/UJFI/2014