Title THE ROMAN DOMATIC PROBLEM IN GRAPHS AND DIGRAPHS: A SURVEY Type of Research Article Keywords THE ROMAN DOMATIC PROBLEM IN GRAPHS AND DIGRAPHS: A SURVEY Abstract THE ROMAN DOMATIC PROBLEM IN GRAPHS AND DIGRAPHS: A SURVEY Researchers Mustapha Chellali (First Researcher)، Nader Jafari Rad (Second Researcher)، Seyed Mahmoud Sheikholeslami Kavkani (Third Researcher)، Lutz Volkmann (Fourth Researcher)