[en] Equations for Green's functions of the augmented quantum field theory with Yukawa-type interaction are rewritten in terms of irreducible many-point functions. ''Minimal'' equations for many-point functions are derived which do not contain the coupling constant explicitly, while the coupling constant appears in ''constraints'' explicitly. The problem of finding lower many-point functions for given higher many-point functions is also discussed. It is also shown that the ''sigma model'' is not equivalent ot the phi⁴ model