Takeshi Horinouchi Masahide Kikkawa Seiya Nishizawa (Patches, NArray supports) Arno Erpenbeck (ruby-gsl project) Austin Newton Jordi Burguet Castell (gsl_tensor) Cameron McBride (Patches, vector/block manipulations) KOSHIRO Tsuyoshi (patches) GSL development team zunda (patches) Christopher Butler Andrea Censi (Bug report on Vector#*)