Kim, Ju-Young / Natter, Martin / Spann, Martin (2010): "Kish - Where Customers Pay As THEY Wish", Review of Marketing Science, 8, Article 3.

Kim, Ju-Young / Natter, Martin / Spann, Martin (2009): "Pay-What-You-Want - A New Participative Pricing Mechanism", Journal of Marketing, Vol. 73 (1), 44-58.

Kim, Ju-Young / Natter, Martin / Spann, Martin (2010): "Pay-What-You-Want - Praxisrelevanz und Konsumentenverhalten", Zeitschrift für Betriebswirtschaft, Vol. 80 (2), 147-169.

Kim, Ju-Young / Natter, Martin / Skiera, Bernd (2009): "Entertainment-Shopping Auctions on the Internet", in: Proceedings of the 38th Conference of the European Marketing Academy (EMAC), Nantes, France.

Kim, Ju-Young/ Natter, Martin / Spann, Martin (2008): "Pay-What-You-Want: Being Better Off When Customers Determine the Price?!" in: Proceedings of the 30th INFORMS Marketing Science Conference, Vancouver 2008.

Kim, Ju-Young / Natter, Martin / Spann, Martin (2007): "Pay-What-You Want - Assessment of a new radical pricing mechanism", Proceedings of the 36th EMAC Conference, Reykjavik, Island.

Kim, Ju-Young / Natter, Martin. / Spann, Martin (2007): "Pay-What-You Want - Assessment of a new participative pricing mechanism", Proceedings of the 29th INFORMS Marketing Science Conference, Singapore.