Joachim Funke. Human Problem Solving in 2012. J. Probl. Solving, 6(1), 2013. [doi]
@article{Funke13, title = {Human Problem Solving in 2012}, author = {Joachim Funke}, year = {2013}, doi = {10.7771/1932-6246.1156}, url = {https://doi.org/10.7771/1932-6246.1156}, researchr = {https://researchr.org/publication/Funke13}, cites = {0}, citedby = {0}, journal = {J. Probl. Solving}, volume = {6}, number = {1}, }