  We prove the existence and the linear stability of small amplitude time {\it
quasi-periodic} standing wave solutions (i.e. periodic and even in the space
variable $ x $) of a $ 2 $-dimensional ocean with infinite depth under the
action of gravity and surface tension. Such an existence result is obtained for
all the values of the surface tension belonging to a Borel set of
asymptotically full Lebesgue measure.

Analysis of PDEs