Developing a composite index for intrapreneurial orientation in small and medium-sized enterprises: A comprehensive dual methodology. - João D. C. B. S. Natividade; Fernando A. F. Ferreira; Constantin Zopounidis; Leandro Ferreira Pereira; Amali Çipi; João J. M. Ferreira (J. Oper. Res. Soc., 2021)