NASA technical note TN (series). D-5953. High precision Chebyshev series approximation to exponential integral [with list of references]; by Kim L. Lee.
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High precision Chebyshev series approximation to exponential integral [with list of references]; by Kim L. Lee.
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NASA technical note TN (series). D-5953. High precision Chebyshev series approximation to exponential integral [with list of references]; by Kim L. Lee.