Bual (or Boal) is a grape used in the production of medium-rich fortified wines that come from the island of Madeira. According to the Geisenheim DNA Database the name is a synonym for each of four, or possibly more, white wine-producing varieties. The name is indiscriminately applied to any one of several varieties including Codega, Dõna Branco, Rabigato, or Portugal and Spain where the fruit is used in the same way for fortified wines.
Boal and G. in, Studies of some thermally unstable complexes of Group V trihalides with trimethylamine and (2H9)-trimethylamine by infra-red, Raman and matrix isolation spectroscopy, normal coordinate analysis and structural methods, J.
Boal, R. Graham and J. Moffat, Radiative decays of the vector mesons and the meson mixing angles, Phys.
Boal, A cascade approach to thermal and chemical equilibrium, in Proceedings of the RHIC Workshop, P. Haustein and C. Woody eds.