The production of hydrogen sulphide and other aroma compounds by wine strains of Saccharomyces cerevisiae in synthetic media with different nitrogen concentrations. - Mendes-Ferreira, Ana; Barbosa, Catarina; Falco, Virgílio; Leão, Cecília; Mendes-Faia, Arlete (Journal of Industrial Microbiology & Biotechnology, 2009)