To leave for Bulgaria you need a visa, it does not depend on the gender of the person and the place of work. A visa is needed for all those who leave in this case, both women and her children. MANDATORY it is necessary to have a notarial permission from the father for the removal of minors (in this case) children, indicating the country where the children are taken to. To obtain a visa, you must provide: a questionnaire filled in for each tourist, passport, photo.

More details about visa formalities can be found on the page "Visa to Bulgaria."