Collect. Czech. Chem. Commun.
1961, 26, 1799-1804
https://doi.org/10.1135/cccc19611799
Luminophor with longlasting afterglow based on calcium strontium sulphide
V. Patrovský
Collect. Czech. Chem. Commun.
1961, 26, 1799-1804
https://doi.org/10.1135/cccc19611799