Assessment of the independent work efficacy of natural sciences students Anna Fomina, Oxana Kundupyan, Mikhail Bibov, Artem Starostin, Julia Kundupyan and Eugeny Aydarkin E3S Web Conf., 273 (2021) 12021 Published online: 22 June 2021 DOI: 10.1051/e3sconf/202127312021