HAVAS, GEORGE; LAWRENCE, JULIE L.; RAMSAY, COLIN; STREET, ANNE PENFOLD; YAZICI, EMINE ŞULE. Defining set spectra for designs can have arbitrarily large gaps. Utilitas Mathematica , [S. l.], v. 75, 2008. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/581. Acesso em: 8 may. 2026.