It has come to the attention of the publisher that Guilherme Tortorella, Paulo A. Cauchick-Miguel (2018), “Teaching lean manufacturing at a postgraduate level: integrating traditional teaching methods and problem-based learning approach,” International Journal of Lean Six Sigma, Vol. 9 No. 3, pp. 301–323, did not fully attribute one of the sources drawn upon within the paper. This was Tortorella, G. and Cauchick-Miguel, P.A. (2017), “An initiative for integrating problem-based learning into a lean manufacturing course of an industrial engineering graduate program,” Vol. 27, e20162247. Link to the cited article. The author guidelines state that articles submitted to the journal should be clearly acknowledged. Although the authors did cite the work published in 2017, they sincerely apologise for this.
A Wed, study studied this question.