MonthlyCalendarView could not be found

I'am trying to use MonthlyCalendarView in a visual Web Part as explained here :

Unfortunately , even though I am using the correct namespaces:

using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using System.Web.UI.WebControls;

I get this error whern I reference to MonthlyCalendarView

the type or namespace could not be found MonthlyCalendarView

I see that inside Microsoft.Sharepoint.WebControls

I only have

Microsoft.Sharepoint.WebControls.SPControlMode
Microsoft.Sharepoint.WebControls.SPDataSourceMode

Is there anything I am missing?