@article{williams1964algorithm, author = {Williams, J. W. J.}, interhash = {88f7b4bad2300e0db2fab61c269e1f4e}, intrahash = {f485e4ea9a877871b59ab503151a7f10}, journal = {Communications of the ACM}, month = jun, number = 6, pages = {347-348}, title = {Algorithm 232: Heapsort}, volume = 7, year = 1964 }