Rodrigo Schmidt Islene C. Garcia Fernando Pedone Luiz Eduardo Buzato Brief announcement: optimal asynchronous garbage collection for checkpointing protocols with rollback-dependency trackability. 392 2004 conf/podc/2004 PODC http://doi.acm.org/10.1145/1011767.1011854 db/conf/podc/podc2004.html#SchmidtGPB04