Snodgrass R.T., Gomez S., McKenzie L.E. Aggregates in the temporary query language TQuel // IEEE Transactions on Knowledge and Data Engineering.-1993.-Vol.5, N 5.-P. 826-842.
Snodgrass R.T., Gomez S., McKenzie L.E. Aggregates in the temporary query language TQuel // IEEE Transactions on Knowledge and Data Engineering.-1993.-Vol.5, N 5.-P. 826–842. 
РУБРИКИ
Компьютерные науки