Vullinghs spend most of his career at the Dutch aircraft manufacturer Fokker.
[4] In 1987 Vullinghs had left Fokker and was directeur of the Coöperatieve Inkoopvereniging COOPRA in Rotterdam.
[5] In 1964-65 Vullings co-founded the International Project Management Association with Roland Gutsch and Arnold Kaufmann from Germany, and Yves Eugene and Pierre Koch from France.
[1] He also played a leading role in the start-up of the INTERNET Congresses of the new association.
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