Titova О., N. Stoliarova, Z. Hrushak, and T. Kravchuk. “DETERMINATION OF CRITICAL VALUE OF PH OF GEL FORMATION IN SILICATE-ALKALI MIXTURES OF VARIOUS COMPOSITION”. Proceedings of National Aviation University, vol. 71, no. 2, July 2017, pp. 100-7, doi:10.18372/2306-1472.71.11753.