Dry sonication process for preparation ofhybrid structures based on graphene and carbon nanotubes usable for chemical sensors - Marija Prosheva, Maryam Ehsani, Bertha T Pérez-Martínez, Jadranka Blazevska Gilev, Yvonne Joseph and Radmila Tomovska (Nanotechnology, IOP Publishing Ltd, 2021)