Trying to find papers of Debye and Falckenhagen's Induction Effect.

[Born2bwire]

I'm trying to fill out my bibliography in a report and I need to reference the papers by Debye and Falckenhagen that laid out their Induction Effect. London gives them as being

P. Debye, Physik. Z., 1920, 21, 178
H. Falckenhagen, Physik. Z., 1922, 23, 87

and I find some random paper elsewhere that had the same references. However, when I pull up the Zeitschrift fuer Physik, http://www.springerlink.com/content/0939-7922/21/1/ , they do not have these volume numbers (for the given years) or the papers from what I can find. Best I can find though is that Physik. Z. is the Zeitschrift fuer Physik. Is there a different journal that Phsyik. Z. refers to or did London make an error that keeps getting propagated?

 

[alxm]

Physik. Z. would "Physikalische Zeitschrift".

 

[Born2bwire]

Ahhh, thanks. That didn't come up in my search of Physik. Z. but certainly makes more sense.