&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ACM Transactions on Software Engineering and Methodology. 2000.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;т. 9 вып. 4: Vol. 9 No. 4. &mdash; 2000. &mdash; ISSN 1049-331X.<br><br><br><br>[ SYS NUM: 9041 ]