Michael Kölling. Lessons from the Design of Three Educational Programming Environments: Blue, BlueJ and Greenfoot. IJPOP, 4(1):5-32, 2015. [doi]
@article{Kolling15-0,
title = {Lessons from the Design of Three Educational Programming Environments: Blue, BlueJ and Greenfoot},
author = {Michael Kölling},
year = {2015},
doi = {10.4018/IJPOP.2015010102},
url = {http://dx.doi.org/10.4018/IJPOP.2015010102},
researchr = {https://researchr.org/publication/Kolling15-0},
cites = {0},
citedby = {0},
journal = {IJPOP},
volume = {4},
number = {1},
pages = {5-32},
}