@article{Zadiraka_2011 author = {Valeriy K. Zadiraka and Natalya V. Koshkina}, title = {Spectral Methods of Solving the Problems of Computer Steganography }, journal = {Journal of Automation and Information Sciences}, issn = {1064-2315}, year = {2011}, volume = {43}, number = {8}, pages = {56--75} }