Optical harmonic generation from animal tissues by the use of picosecond and femtosecond laser pulses.
Guo Y, Ho PP, Tirksliunas A, Liu F, Alfano RR. Optical harmonic generation from animal tissues by the use of picosecond and femtosecond laser pulses. Appl Opt. 1996 Dec 01; 35(34):6810-3.