  // Refernces
  var inherits = Rx.internals.inherits,
    AbstractObserver = Rx.internals.AbstractObserver,
    Observable = Rx.Observable,
    observableProto = Observable.prototype,
    AnonymousObservable = Rx.AnonymousObservable,
    ObservableBase = Rx.ObservableBase,
    observableDefer = Observable.defer,
    observableEmpty = Observable.empty,
    observableNever = Observable.never,
    observableThrow = Observable['throw'],
    observableFromArray = Observable.fromArray,
    defaultScheduler = Rx.Scheduler['default'],
    SingleAssignmentDisposable = Rx.SingleAssignmentDisposable,
    SerialDisposable = Rx.SerialDisposable,
    CompositeDisposable = Rx.CompositeDisposable,
    BinaryDisposable = Rx.BinaryDisposable,
    RefCountDisposable = Rx.RefCountDisposable,
    Subject = Rx.Subject,
    addRef = Rx.internals.addRef,
    normalizeTime = Rx.Scheduler.normalize,
    helpers = Rx.helpers,
    isPromise = helpers.isPromise,
    isFunction = helpers.isFunction,
    isScheduler = Rx.Scheduler.isScheduler,
    observableFromPromise = Observable.fromPromise;
