Should companies jointly promote their complementary products when they compete in other product categories?

Salma Karray, Simon Pierre Sigué. Should companies jointly promote their complementary products when they compete in other product categories?. European Journal of Operational Research, 255(2):620-630, 2016. [doi]

@article{KarrayS16,
  title = {Should companies jointly promote their complementary products when they compete in other product categories?},
  author = {Salma Karray and Simon Pierre Sigué},
  year = {2016},
  doi = {10.1016/j.ejor.2016.05.049},
  url = {http://dx.doi.org/10.1016/j.ejor.2016.05.049},
  researchr = {https://researchr.org/publication/KarrayS16},
  cites = {0},
  citedby = {0},
  journal = {European Journal of Operational Research},
  volume = {255},
  number = {2},
  pages = {620-630},
}