Some Applications Of A Lemma On Fourier Series Tord Ganelius — 1957 Publications de l'Institut Mathématique
On one-sided approximation by trigonometrical polynomials TORD GANELIUS — 1956 Mathematica Scandinavica
The Degree of Approximation by Rational Functions with Fixed Poles. Jan-Erik. Andersson; Tord Ganelius — 1977 Mathematische Zeitschrift