Impact of the Former Salaspils Nuclear Reactor on the Surrounding Territory
Riekstina, D., Berzins, J., Krasta, T., Kizane, G., Rudzitis, J.
Natural Radioactivity in Clay and Building Materials Used in Latvia
Riekstina, D., Berzins, J., Krasta, T., Svinka, R., Skrypnik, O.