David. Properties and Computation of the Functional Inverse of Gamma. 2017 19th International Symposium on Symbolic and Numeric Algorithms for Scientific
2014. software download link. spitbol: Raw power and speed for non-numericcomputation.. [2020-04-24]. (原始内容存档于2019-02-05). Emmer, Mark B. SNOBOL4+: The
Revised5 Report on the Algorithmic Language Scheme. Higher-Order and SymbolicComputation. August 1998, 11 (1): 7–105 [2007-01-04]. doi:10.1023/A:1010051815785