document.write("«&nbsp;<a href='/news/view?id=88029'>Goethals--Seidel difference families with symmetric or skew base blocks. (arXiv:1802.00556v1 [math.CO])</a>");document.write(" | ");document.write("<a href='/news/view?id=88031'>Han Solo film finally has a trailer, complete with Millennium Falcon and a Wookiee</a>&nbsp;»");