Russell L. Ackoff. Science in the Systems Age: Beyond IE, OR, and MS. Operations Research, 21(3):661-671, 1973. [doi]
@article{Ackoff73-0,
title = {Science in the Systems Age: Beyond IE, OR, and MS},
author = {Russell L. Ackoff},
year = {1973},
doi = {10.1287/opre.21.3.661},
url = {http://dx.doi.org/10.1287/opre.21.3.661},
researchr = {https://researchr.org/publication/Ackoff73-0},
cites = {0},
citedby = {0},
journal = {Operations Research},
volume = {21},
number = {3},
pages = {661-671},
}