  We investigate unconventional superfluidity in a gas of Fermi atoms with an
anisotropic p-wave Feshbach resonance. Including the p-wave Feshbach resonance
as well as the associated three kinds of quasi-molecules with finite orbital
angular momenta $L_z=\pm1,0$, we calculate the transition temperature of the
superfluid phase. As one passes through the p-wave Feshbach resonance, we find
the usual BCS-BEC crossover phenomenon. The p-wave BCS state continuously
changes into the BEC of bound molecules with L=1. Our calculation includes the
effect of fluctuations associated with Cooper-pairs and molecules which are not
Bose-condensed.
