A model for the development of innovative tourism products: from service to transformation M.C. Santos A. Ferreira C. Costa J.A.C. Santos Publication Journal: Sustainanility. Special Issue "Optimal Tourism Development" Year of Publication: 2020 Identifiers ISSN: 2071-1050 Other Numbers: 2-s2.0-85085941988 Alternative titles DOIGoogle ScholarBibTeXRIS Locators