Ioannis Caragiannis Christos Kaklamanis Panagiotis Kanellopoulos Evi Papaioannou Scheduling to maximize participation. 142-155 2008 402 Theor. Comput. Sci. 2-3 http://dx.doi.org/10.1016/j.tcs.2008.04.031 db/journals/tcs/tcs402.html#CaragiannisKKP08