Yoko Yamakata Shinji Imahori Yuichi Sugiyama Shinsuke Mori Katsumi Tanaka Feature Extraction and Summarization of Recipes Using Flow Graph. 241-254 2013 SocInfo https://doi.org/10.1007/978-3-319-03260-3_21 conf/socinfo/2013 db/conf/socinfo/socinfo2013.html#YamakataISMT13