1. The Shortest Path to Happiness: Recommending Beautiful, Quiet, and Happy Routes in the City;Quercia Daniele;Proc. of HT,2014
2. Pleasant Route Suggestion based on Color and Object Rates
3. Geographic Variation in Tourism Demand by Historical Landscape Conservation in Terms of the Contingent Behavior of Potential Tourists to Kyoto;Muranaka Akio;Annals of the Association of Economic Geographers,2012
4. A note on two problems in connexion with graphs