New parameterization of the trinucleon wavefunction and its application   to the $\pi^3$He scattering length
  We present a new parameterization of the trinucleon wavefunction. As a novel feature a separable parameterization for the complete wavefunction is given. In this way any calculation that considers two body forces only is largely simplified. To demonstrate this we calculate the $\pi^3$He scattering length. 
V. Baru, J. Haidenbauer, C. Hanhart, and J. A. Niskanen