... Subject headings : dust, extinction х methods : analytical х scattering 1 . ... there has been considerable progress in the understanding of interstellar dust ... of elements in the gas and dust phases in the interstellar medium ; Savage & Sembach ...
... di erent composition should form during dust grain evolution in interstellar medium ... in the case of fractal-like, u y aggregates typical of interplanetary media ... way to study e ects of composition inhomogeneity expected in cosmic dust grains ...