– Morimoto’s works are often collected in art books or academic papers (e.g., Koji Morimoto: Orange might refer to a short animation from the Genius Party series? Actually, “Orange” is also a short by Fumiko Saito, not Morimoto).
However, there is no widely known official work titled "Orange" by Koji Morimoto (the anime director known for "Magnetic Rose" , "Beyond" , "Akira" , etc.). The number 79 might refer to a page number, a file name, or a year (1979). koji+morimoto+orange+pdf+79
The paper in question is (or similar variations regarding call composition), but most famously, the combination of "Morimoto" and "Orange" in this context refers to the study of how bats or birds respond to specific sound sequences (syntax). – Morimoto’s works are often collected in art