Quality of education and socio-economic growth: The methods of Ishikawa, Deming and Pareto as tools for establishing cause-effect relationshipsArtem Artyukhov, Sergii Lyeonov, Tetyana Vasylieva and Jan PolcynE3S Web Conf., 307 (2021) 06004DOI: https://doi.org/10.1051/e3sconf/202130706004