@article{BrandtBrandt2013, author = {Andreas Brandt and Manfred Brandt}, title = {Workload and busy period for M/GI/1 with a general impatience mechanism}, journal = {Queueing Systems}, volume = {75}, number = {2-4}, pages = {189 -- 209}, doi = {10.1007/s11134-013-9373-7}, year = {2013}, }