ON THE SINGLE-SERVER QUEUEING SYSTEM WITH FIXED NUMBER OF RETRIALS СтатьяBocharov P.P., D'apice C., Rizelian G., Salerno S.MODELLING AND SIMULATION 2001. 2001. С. 751-753
STUDENTS AT THE BEGINNING AND AT THE END OF THE 20-TH CENTURY. A COMPARATIVE STUDY СтатьяPyzanova Z.V., Borisenkova P.A.Социологические исследования. 2001. С. 136-139