Text this: Lasing in rare gases with large cross-section electron beam pumping with a current pulse duration of up to 2.5 ms (generatsiya v inertnykh gazakh pri nakachke elektronnym puchkom bolshogo secheniya s dlitelnostyu impulsa toka do 2.5 ms); Письма в Журнал технической физики; Т. 12, вып. 1-8