Low-lying spectrum of the Y-string three-quark potential using hyper-spherical coordinatesV. Dmitrašinović, Toru Sato and Milovan ŠuvakovEur. Phys. J. C, 62 2 (2009) 383-397DOI: https://doi.org/10.1140/epjc/s10052-009-1050-y