↑Einasto, Jaan. Dark Matter and Cosmic Web Story. World Scientific Publishing. 2013. ISBN 978-981-4551-05-2. In the 1930's [the] Estonian government started a campaign to change German names to Estonian ones. So our family name was also changed. My father was a real patriot of Estonia, so he invented the name "Einasto", which is a permutation of "Estonia". The name was patented, so nobody else can have this name. In this respect our family name is unique.