The publishing house IntechOpen (London, United Kingdom) published the online chapter "Determining the Filler Activity in the Sintering Pitch Composite" (DOI: 10.5772 / * intecopen.82012), prepared for the collection "Fillings" by the staff of SE 'UKHIN ' V. M . Shmalko, V.V. Karchakova ,O.I. Zelensky and F.F.Cheshko.