Before revision: Horvath characterizes the movements as fluid, uninterrupted, and cohesive, likening them to the ripples caused by a pebble dropped in a lake that expand outward and then return inward.
After revision: <ref name=":1">Horvath characterizes the movements as fluid, uninterrupted, and cohesive, likening them to the ripples caused by a pebble dropped in a lake that expand outward and then return inward.