H. H. Robertson, M. J. McCann. A note on the numerical integration of conservative systems of first-order ordinary differential equations. Comput. J., 12(1):81, 1969. [doi]
@article{RobertsonM69,
title = {A note on the numerical integration of conservative systems of first-order ordinary differential equations},
author = {H. H. Robertson and M. J. McCann},
year = {1969},
doi = {10.1093/comjnl/12.1.81},
url = {https://doi.org/10.1093/comjnl/12.1.81},
researchr = {https://researchr.org/publication/RobertsonM69},
cites = {0},
citedby = {0},
journal = {Comput. J.},
volume = {12},
number = {1},
pages = {81},
}