@inproceedings{sgem2017S05094,
  title = {POLAND MEDICAL ENTREPRENEURSHIP – CONCEPTS, MODELS AND CLASSIFICATIONS},
  author = {L. Sulkowski and J. Sulkowska},
  booktitle = {4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM 2017},
  year = {2017},
  pages = {749-756},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgemsocial2017/15/S05.094}
}