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Manuscript on "Proof of the Jacoby identity".Manuscript

Notes and calculations on Yang-Feldmann's formalism.Notes

Calulcations on Peierls' formalism.Calculations

Calculations.Calculations

Two references (M. Ostrogradski and J. Rayski).Notes

Calculations.Calculations

Calculations on Peierls' formalism.Calculations

Draft for a letter which has not been sent.Letter

Calculations.Calculations

Calculations on meson theory.Calculations