Research and Development About CTFs
https://www.researchgate.net/publication/352462179_Development_of_a_Low-cost_Capture_The_Flag_CTF_Online_Platform_using_Digital_Ocean_CTFd_and_Free-WebHosting_Basis_for_Information_Security_Course_Improvement
https://www.researchgate.net/profile/Orlando-Ritchie-Natonton/achievement/60c6eae16bc5bb863044389a
https://www.researchgate.net/publication/349844475_Toward_Guidelines_for_Designing_Cybersecurity_Serious_Games
https://www.researchgate.net/publication/348414678_Design_and_Develop_a_Cybersecurity_Education_Framework_Using_Capture_the_Flag_CTF
https://www.researchgate.net/publication/314293322_Capture_the_Flag_Unplugged_an_Offline_Cyber_Competition
https://smartech.gatech.edu/bitstream/handle/1853/50284/thesis.pdf