HIRAI, T. Functional Gradient Materials. Materials Science and Technology. 1996, 293-341
SHIOTA, I. Functionally Graded Materials 1996. 1997
SUBMANN, H. Scanning Thermo-probe Technique - a Method for Determi-Nation of Concentration Profiles. Proc. of 12th International Conference of Thermoelectrics. 1994, 86-89