approximant de Padé
1978 / Padé approximants via the continued fraction approach / J. Sullivan / American Journal of Physics 46 (1978) p. 489 [doi]
2002 / Application of Padé interpolation to stationary state problems / C. N. Leung ; Yvonne Y. Y. Wong / American Journal of Physics 70 (2002) p. 1020 [doi]