John D. Pryce. Algorithm 789: SLTSTPAK: : a test package for Sturm-Liouville solvers. ACM Transactions on Mathematical Software, 25(1):58-69, 1999. [doi]
@article{Pryce99a, title = {Algorithm 789: SLTSTPAK: : a test package for Sturm-Liouville solvers}, author = {John D. Pryce}, year = {1999}, doi = {10.1145/305658.287652}, url = {http://doi.acm.org/10.1145/305658.287652}, tags = {testing}, researchr = {https://researchr.org/publication/Pryce99a}, cites = {0}, citedby = {0}, journal = {ACM Transactions on Mathematical Software}, volume = {25}, number = {1}, pages = {58-69}, }