sentences:  In particular, there is a risk that some charge can leak between nearby cells, causing the refresh or read of one row to cause a "disturbance error" in an adjacent or even nearby row.The awareness of disturbance errors dates back to the first commercially available DRAM in the early 1970s (the Intel 1103).Despite the mitigation techniques employed by manufacturers, commercial researchers proved in a 2014 analysis that commercially available DDR3 DRAM chips manufactured in 2012 and 2013 are susceptible to disturbance errors.