Terry Beyer, Sandra Mitchell Hedetniemi. Constant Time Generation of Rooted Trees. SIAM Journal on Computing, 9(4):706-712, 1980.
@article{BeyerH80, title = {Constant Time Generation of Rooted Trees}, author = {Terry Beyer and Sandra Mitchell Hedetniemi}, year = {1980}, researchr = {https://researchr.org/publication/BeyerH80}, cites = {0}, citedby = {0}, journal = {SIAM Journal on Computing}, volume = {9}, number = {4}, pages = {706-712}, }