[en] The report presents results concerning the methods of bolometric and scintillation crystal detection of dark matter as well as the work on very low-temperature detectors. In the frame of the laboratory and EDELWEISS collaboration pioneering work was developed aiming at the direct detection of the particles which could constitute a major part of this matter as an exotic form of matter. In the frame of this experiment installed at LSM it was reached a detection threshold of 3 keV (as nucleus recoil energy) and a background noise as low as 15 count/kg.day.KeV at energies above 10 keV. As part of the project a 10 mK dilution cryostat was developed. The work performed with scintillating crystals and analyses with pulse shape discriminators for search of the hypothetical weak interacting massive particles (WIMPs) showed the existence of a third population not clearly identified but definitely consisting not of neutrons. So, the research for WIMPs with scintillating crystals is limited by this third population. Finally, in the field of very low temperature detectors the functioning and characterization of the tunnel junctions operating at 20 mK (with the Orange cryostat) are reported