Acta Physica Polonica A
Acta Physica Polonica A > 2017 > 131 > 4 > 931-933
Acta Physica Polonica A > 2017 > 131 > 4 > 907-909
Acta Physica Polonica A > 2017 > 131 > 4 > 943-945
Acta Physica Polonica A > 2017 > 131 > 4 > 931-933
Acta Physica Polonica A > 2017 > 131 > 4 > 907-909
Acta Physica Polonica A > 2017 > 131 > 4 > 943-945