Search for: [Subject and Keywords = queueing systems with random volume customers] OR [Subject and Keywords = sectorized memory buffer] OR [Subject and Keywords = total volume vector] OR [Subject and Keywords = Laplace and Laplace\?Stieltjes transforms] OR [Subject and Keywords = multi\-variate L`Hospital rule] OR [Title = Queueing systems with random volume customers and a sectorized unlimited memory buffer] OR [Creator = Tikhonenko, Oleg] OR [Creator = Ziółkowski, Marcin] OR [Creator = Kempa, Wojciech M.]