Uncaught TypeError: undefined is not a function fullcalendar

I have the following HTML code:

<meta charset='utf-8' />
<link href='/static/fullcalendar/fullcalendar.css' rel='stylesheet' />
<link href='/static/fullcalendar/fullcalendar.print.css' rel='stylesheet' media='print' />
<script src='/static/fullcalendar/lib/moment.min.js'></script>
<script src='/static/js/jquery/jquery-2.1.3.min.js'></script>
<script src='/static/fullcalendar/fullcalendar.min.js'></script>
<script>
    $(document).ready(function() {


        $('#calendar').fullCalendar({

    })

});

and I am getting the following error:

Uncaught TypeError: undefined is not a function(index):18