1. Project supported by Latvian Council of Science, No. 01.0253, 1999-2002. Influence of the microscopic instability of the crystallisation process on the dopants segregation and crystal microscopic inhomogeneities during growth of single silicon crystals.

2. Project in cooperation with Institute for Electrothermal Processes, University of Hanover, Germany, 2001-2002. 2D and 3D numerical modelling of turbulent melt flows in crucibles for large single silicon crystal Czochralski growth, investigation of the melt motion under the influence of various static (DC) and alternating (AC) magnetic fields. No. at University of Latvia 1797