Eastham, M. S. P., Fulton, C. T., & Pruess, S. Using the SLEDGE package on Sturm-Liouville problems having nonempty essential spectra. ACM transactions on mathematical software..
Lua i Stíl Chicago (17ú heag.)Eastham, Michael S. P., Charles T. Fulton, agus Steven Pruess. "Using the SLEDGE Package on Sturm-Liouville Problems Having Nonempty Essential Spectra." ACM Transactions on Mathematical Software. .
Lua MLA (9ú heag.)Eastham, Michael S. P., et al. "Using the SLEDGE Package on Sturm-Liouville Problems Having Nonempty Essential Spectra." ACM Transactions on Mathematical Software., .
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