Determination of the heat-retaining capacity of layered materials for shoe lining by the method of mathematical planning of the experimentNodir Mirzayev, Adham Rafikov, Farrukh Yuldashev, Sevara Alimkhonova and Temur PulatovE3S Web Conf., 383 (2023) 04028DOI: https://doi.org/10.1051/e3sconf/202338304028