Heloisa Candello, David Millen, Silvia Bianchi, Alan Braz, Pay by cash? Quickly design-inspired studies to gain insights about people financial transactions, Blucher Design Proceedings, Volume 2, 2015, Pages 614-623, ISSN 23186968, http://dx.doi.org/10.5151/designpro-CIDI2015-cidi_34 (www.proceedings.blucher.com.br/article-details/pay-by-cash-quickly-design-inspired-studies-to-gain-insights-about-people-financial-transactions-20247) Palavras-chave:: ;