A Family of Experiments to Assess the Impact of Page Object Pattern in Web Test Suite Development - Leotta, Maurizio; Biagiola, Matteo; Ricca, Filippo; Ceccato, Mariano; Tonella, Paolo (2020 IEEE 13th International Conference on Software Testing, Validation and Verification (ICST), Software Testing, Validation and Verification (ICST), 2020 IEEE 13th International Conference on, 2020)