There are several sub-modules included with the ui.router module, however only this module is needed as a dependency within your angular app. The other modules are for organization purposes.
The modules are: ui.router - the main "umbrella" module ui.router.router -
You'll need to include only this module as the dependency within your angular app.
<!doctype html>
<html ng-app="myApp">
<head>
<script src="js/angular.js"></script>
<!-- Include the ui-router script -->
<script src="js/angular-ui-router.min.js"></script>
<script>
// ...and add 'ui.router' as a dependency
var myApp = angular.module('myApp', ['ui.router']);
</script>
</head>
<body>
</body>
</html>