@Article{,
 author = {M. Kubanek, D. Smorawa, T. Holotyak},
 title = {Feature Extraction of Palm Vein Pattern Based on Two--Dimensional Density Function},
 journal = {Lecture Notes in Artificial Intelligence},
 year = {2015},
 volume = {9120},
 number = {2},
 pages = {101--111}
 }