Compositional References for Stateful Functional Programming. - Koji Kagawa (ICFP, 1997)

Programming with Explicit Regions. - Koji Kagawa (ASIAN, 1999)

Monadic Encapsulation with Stack of Regions. - Koji Kagawa (FLOPS, 2001)

Shrinkable Polymorphic Variants. - Koji Kagawa (APLAS, 2002)

A Web-based system for learning programming using a graphics format on WWW. - Kenichi Takai; Koji Kagawa; Hiroyuki Tarumi (AMT, 2005)

An Eclipse Plug-in for SVG Animations in an Educational System for Programming. - Naoki Yanagisawa; Kenichi Takai; Koji Kagawa; Hiroyuki Tarumi (ICCE, 2005)

Polymorphic variants in Haskell. - Koji Kagawa (Haskell, 2006)

Creating Animations in SVG format for Visualizing Program Execution. - Koji Kagawa (ICCE, 2006)

WAPPEN: a web-based application framework for programming and its bison/flex plug-in. - Koji Kagawa (ITiCSE, 2009)

Towards a Web-based program visualization system using Web3D. - Gensuo Han; Koji Kagawa (ITHET, 2012)

Quantitative Evaluation of Flash-based Educational Visualizing Simulator. - Kei Takeichi; Yoshiro Imai; Kazuaki Ando; Koji Kagawa; Tetsuo Hattori; Yusuke Kawakami (J. Robotics Netw. Artif. Life, 2016)

Development of a Web-based Support System for Object Oriented Programming Exercises with Graphics Programming. - Yuya Asano; Koji Kagawa (ITHET, 2019)

Development of a Learning Support System for Improving Metacognition in Programming Exercises. - Teppei Oyama; Koji Kagawa (IIAI-AAI, 2024)