Hybrid Elitist-Ant System for Nurse-Rostering Problem. - Ghaith M. Jaradat; Anas Bassam Al-Badareen; Masri Ayob; Mutasem Alsmadi; Ibrahim Almarashdeh; Mahmoud Ash-Shuqran; Eyas Al-Odat (J. King Saud Univ. Comput. Inf. Sci., 2019)