The paper of Szabolcs Számadó as a co-author with István Zachar, András Szilágyi and Eörs Szathmáry, "Farming the mitochondrial ancestor as a model of endosymbiotic establishment by natural selection" has been published by the Proceedings of the National Academy of Sciences of the United States of America (Impact Factor: 9.7)
Available here: http://www.pnas.org/content/early/2018/01/29/1718707115