TY  - GEN
AU  - Podlubny,Igor
AU  - Podlubny, Igor.
TI  - Fractional differential equations: an introduction to fractional derivatives, fractional differential equations, to methods of their ... 
T2  - Mathematics in science and engineering
SN  - 0125588402
U1  - 515 
PY  - 1999///
CY  - [S.l.]
PB  - Academic Press
ER  -