$\pi NN^*(1440)$ and $\sigma NN^*(1440)$ coupling constants from a   microscopic $NN \to NN^*(1440)$ potential
  By means of a $NN \to NN^*(1440)$ transition potential derived in a parameter-free way from a quark model, we determined simultaneously the $\pi NN^*(1440)$ and $\sigma NN^*(1440)$ coupling constants. 
P. Gonz\'alez, B. Juli\'a-D\'iaz, A. Valcarce, F. Fern\'andez