Angular ui router : calling method on controller from onEnter

My ui router config is like this:

$stateProvider
    .state("list",{url:"/list",templateUrl:"list.html",controller:"ctrl as vm"})
    .state("list.select",
       url:'/select',
       templateUrl:'select.html',
       onEnter:function( ) { ... }
    });

The list.select state uses the same controller as the list state. How can I call a method on the controller from the onEnter function? Note that I'm using the "ctrl as vm" syntax! Can I also access $stateParams here?