HOLÝ, Dušan - MATEJÍČKA, Ladislav - PINDA, Ľudovít. On Faster Convergent Infinite Series. In International journal of mathematics and mathematical sciences. - New York : Hindawi Publishing Corporation, 2008. ISSN 1687-0425, 2008, vol. 2008, p. 1-8. Dostupné na : <http://downloads.hindawi.com/journals/ijmms/2008/753632.pdf>