FILO, Peter. Did the Life Arise Earlier than Planets? In Journal of Physics and Astronomy. - Gujarat : Mehta Press, 2014. ISSN 2320-6764, 2014, vol. 3, no. 4, [pp. 1-4], online. Dostupné na : <http://www.mehtapress.com/mehtapress/Journals/Journal-of-Physics-&-Astronomy/vol-3-issue-4/abs_01.html>