000 00346nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aDr.P.R.Vittal and V.Malini
245 0 _aOperations Research
250 _a2016
260 _aChennai
260 _bMargham Publications
260 _c2016
650 _aOperations Research
942 _cREF
999 _c25535
_d25535