document.write("« Dynamic Game-based Maintenance Scheduling of Integrated Electric and Natural Gas Grids with a Bilevel Approach. (arXiv:1712.09443v1 [math.OC])");document.write(" | ");document.write("Effective Optimization Criteria and Relay Selection Algorithms for Physical-Layer Security in Multiple-Antenna Relay Networks. (arXiv:1712.09420v1 [cs.IT]) »");