\input zb-basic \input zb-ioport \iteman{io-port 70879632} \itemau{Cachin, Christian} \itemti{Integrity and consistency for untrusted services - (Extended abstract)} \itemso{SOFSEM, 1-14 (2011).} \itemcc{} \itemut{} \itemli{doi:10.1007/978-3-642-18381-2\_1} \end