Proceedings of the 15th International Workshop on Slow Positron Beam Techniques & Applications (SLOPOS-15) :  Prague, Czech Republic, September 2-6, 2019 / 
 International Workshop on Slow Positron Beam Techniques & Applications, 15  Slow Positron Beam Techniques and Applications  Proceedings of the 15th International Workshop on Slow Positron Beam Techniques and Applications  SLOPOS-15 
editors of the proceedings: Jakub Čižek, Ivan Procházka. 
 - Warsaw :  Polish Academy of Sciences. Institute of Physics,  2020. 
 - Strony [6], 81-264 :  ilustracje ;  30 cm. 
 - Acta Physica Polonica. A.,  vol. 137, no. 2 (2020)  0587-4246 ; .
 - Acta Physica Polonica.  A  vol. 137, no. 2 (2020) .
<br/><br/> Druk dwuszpaltowy. 
<br/><br/>Bibliografia przy rozdziałach.