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math-ph2006★ 7 cited
Generalized spheroidal wave equation and limiting cases
B. D. Bonorino Figueiredo
We find sets of solutions to the generalized spheroidal wave equation (GSWE) or, equivalently, to the confluent Heun equation. Each set is constituted by three solutions, one given…
math-ph2004★ 4 cited
Integral relations and new solutions to the double-confluent Heun equation
Bartolomeu D. B. Figueiredo
Integral relations and transformation rules are used to obtain, out of an asymptotic solution, a new group of four pairs of solutions to the double-confluent Heun equation. Each pa…