Amplitude analyses of the D+ and D-s(+) --> K+K- pi(+) Dalitz plots ar
e presented using data collected by the Fermilab high energy photoprod
uction experiment E687. Our data are fit to a model consisting of a su
m of Breit-Wigner amplitudes for the intermediate two-body resonant de
cay modes. We extract decay fractions and relative phases. These resul
ts are used to infer new branching ratios for D+ --> K(+)K(-)pi(+) inc
lusive as well as the phi pi(+) and ($) over bar K (892) K-O(+) chann
els.