Vitaly A. Gradusov, Vladimir A. Roudnev, Evgeny A. Yarevsky & Sergey L. Yakovlev. (2021). Solving the Faddeev-Merkuriev Equations in Total Orbital Momentum Representation via Spline Collocation and Tensor Product Preconditioning. Communications in Computational Physics. 30 (1). 255-287. doi:10.4208/cicp.OA-2020-0097