SnowFlock: Virtual Machine Cloning as a First-Class Cloud Primitive. - H. ANDRÉS LAGAR-CAVILLA; WHITNEY, JOSEPH A.; BRYANT, ROY; PATCHIN, PHILIP; BRUDNO, MICHAEL; DE LARA, EYAL; STEPHEN M. RUMBLE; M. SATYANARAYANAN; ADIN SCANNELL (ACM Transactions on Computer Systems, 2011)