Neeldhara Misra Venkatesh Raman Saket Saurabh Somnath Sikdar The Budgeted Unique Coverage Problem and Color-Coding. 310-321 2009 CSR http://dx.doi.org/10.1007/978-3-642-03351-3_29 conf/csr/2009 db/conf/csr/csr2009.html#MisraRSS09