Multiparton interactions in QGSJET-II
I'll discuss the treatment of multiparton interactions in the framework of the QGSJET-II model. A particular attention will be paid to the assumptions concerning the momentum structure of constituent parton Fock states in hadrons and to the respective consequences for the predicted spectra of secondary hadrons. An impact on the predictions for cosmic-ray induced extensive air showers will be also discussed. The main directions for further model development will be outlined.