@article{RowoldRohmann2009,
  author    = {J. Rowold and A. Rohmann},
  title     = {Transformational and transactional leadership styles, followers positive and negative emotions, and performance in German non-profit orchestras},
  journal   = {Nonprofit Management and Leadership},
  volume    = {20},
  pages     = {41 -- 59},
  year      = {2009},
}