@conference {281, title = {Dealing with Zero Density Using Piecewise Phase-Type Approximation}, booktitle = {Computer Performance Engineering - 11th European Workshop, {EPEW} 2014, Florence, Italy, September 11-12, 2014. Proceedings}, year = {2014}, doi = {10.1007/978-3-319-10885-8_9}, url = {http://dx.doi.org/10.1007/978-3-319-10885-8_9}, author = {Lubos Korenciak and Jan Kr{\v c}{\'a}l and Vojtech Reh{\'a}k} }