2020 https://www.tandfonline.com/doi/pdf/10.1080/00963402.2019.1701279?casa_token=4V5joahKi98AAAAA:8eDcHCqRKBlN8qa5E9czcqATZBDAr57QxE-8IKbKzD-oTuR0qelk77EywpGXfDlchmXWYogV46uQkJg Academic paper
2020 https://www.tandfonline.com/doi/pdf/10.1080/00963402.2019.1701279?casa_token=4V5joahKi98AAAAA:8eDcHCqRKBlN8qa5E9czcqATZBDAr57QxE-8IKbKzD-oTuR0qelk77EywpGXfDlchmXWYogV46uQkJg Academic paper