Berlin, Matt, Jesse Allen, Varadharajan Kailasam, David Rosenberg, и Edward Rosenberg. 2015. «NANOPOROUS SILICA POLYAMINE COMPOSITES FOR METAL ION CAPTURE FROM RICE HULL ASH». Вестник КазНУ. Серия биологическая 48 (2):37-46. https://bb.kaznu.kz/index.php/biology/article/view/776.