@article{haos06:stekol,
author = {Harri Haanp{\"a}{\"a} and {\"O}sterg{\aa}rd, Patric R. J.},
journal = {Arkhimedes},
note = {In Finnish},
number = {2},
pages = {18-21},
title = {Steinerin kolmikkoj\"arjestelmist\"a sudokuun},
volume = {2006},
year = {2006},
}