Asymptotics of Type I Hermite–Padé Polynomials for Semiclassical Functions - Martínez-Finkelshtein, Andrei; Rakhmanov, Evguenii A.; Suetin, Sergey P. (Modern Trends in Constructive Function Theory, 2016)
Keywords: WKB approximation; convergence; zero distribution; rational approximation; Padé approximation; Hermite–Padé polynomials; differential equations