Šablon:Springer
Izgled
Hazewinkel, Michiel, ured. (2001), "Springer", Matematička enciklopedija, Kluwer Academic Publishers, ISBN 978-1556080104
Hazewinkel, Michiel, ured. (2001), "Springer", Matematička enciklopedija, Kluwer Academic Publishers, ISBN 978-1556080104