@Article{zawadzki13increasing, author = {Zawadzki, P. and PuchaƂa, Z. and Miszczak, J.A.}, title = {Increasing the security of the ping-pong protocol by using many mutually unbiased bases}, doi = {10.1007/s11128-012-0403-x}, journal = {Quantum Inf. Process.}, volume = {12}, number = {1}, pages = {569-576}, year = {2013}, archivePrefix = {arXiv}, preprint = {1201.3230}, }