FWIW, these two articles are short but good:
1. Rocket F. Proximity Fuze. Electronics, 1945, No 11, pp. 110-111.
2. Hunton R. D., Miller B. J. Generator-Powered Proximity Fuze. Electronics, 1945. No 12. pp. 98-103.
You can find them at
www.americanradiohistory.com
They were two of many articles in the series titled "Electronics War Report" which appeared in "Electronics" from 1945 onwards