@inproceedings{sgem2019S17071,
  title = {THE THIRTEEN LETTERS OF JOSEF FRANK},
  author = {G. Guaragna},
  booktitle = {6th International Scientific Conference on Social Sciences and Arts SGEM 2019},
  year = {2019},
  pages = {593-598},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgemsocial2019V/6.1/S17.071}
}