Naoaki Fujita, Yukinori Shibuya, Noriyuki Murakami. The Analysis of Condition to introduce Licorice Root Harvester by the Viewpoint of Investment and Labor. National Agricultural Food Research Organization Hokkaido Agricultural Research Center FARM MANAGEMENT RESEARCH. 2022. 118. 83-92
Naoaki Fujita, Toshiya Arioka, Ken Sawada, Kuniki Kiyama, Kuniki Imamura, Makoto Matsuda, Shusei Yamamoto, Kazumi Kaneichi, Tomohiro Tani, Kan Higashiyama. The Efficiency of Operation and Economy about Transportation of Sugar Beet by Utilization of Beet Loaders with Tractor. National Agricultural Food Research Organization Hokkaido Agricultural Research Center FARM MANAGEMENT RESEARCH. 2022. 118. 50-82
Naoaki Fujita. The Advanced Case about Utilization of Large Scale Agricultural Machinery, Management of Sugar Manufacture and Transportation Company in Foreign Country. National Agricultural Food Research Organization Hokkaido Agricultural Research Center FARM MANAGEMENT RESEARCH. 2022. 118. 34-49
Naoaki Fujita. The Advanced Case about Agricultural Work Support Organization of Upland Farm in Foreign Country. National Agricultural Food Research Organization Hokkaido Agricultural Research Center FARM MANAGEMENT RESEARCH. 2022. 118. 23-33
The Comparison about Cost to require to cultivate and ensile between Composing farms labor and Entrusting External Contractor at a TMR Center. 2017. 116. 25-37
An Economic Effects of Lactation Persistency on Dairy Farms. 2017. 54. 4. 90-95
Relationship between Revenue and Parturition Interval of cow in Dairy Farm Management on members of TMR Center. 2016. 115. 1-11
An Inquiry into the Investment in order to introduce Ear-corn Ensilage at TMR Center. 2016. 115. 13-24