المؤلفون: Ziese, H. B.

المصدر: Physikalische Blätter ; volume 20, issue 6, page 283-285 ; ISSN 0031-9279 1521-3722

الاتاحة: http://dx.doi.org/10.1002/phbl.19640200608
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fphbl.19640200608
https://onlinelibrary.wiley.com/doi/pdf/10.1002/phbl.19640200608