User talk:Chetvorno/work
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Greetings. Any progress. Do you need something from me? Constant314 (talk) 14:45, 10 May 2022 (UTC)
Possible reference form Feynmann
[edit]@Chetvorno: THe Feynmenn lectures, volue II, chapter18 might give us the necesary reference. [1] Constant314 (talk) 15:43, 24 May 2022 (UTC)