Zygmunt Pizlo. Editor's Introduction. J. Probl. Solving, 6(1), 2013. [doi]
@article{Pizlo13, title = {Editor's Introduction}, author = {Zygmunt Pizlo}, year = {2013}, doi = {10.7771/1932-6246.1158}, url = {https://doi.org/10.7771/1932-6246.1158}, researchr = {https://researchr.org/publication/Pizlo13}, cites = {0}, citedby = {0}, journal = {J. Probl. Solving}, volume = {6}, number = {1}, }