Where are the UoMSchedule and Product classes? (Dynamics CRM 2011)

Hello there,

I have been following some samples/posts and most of them use a couple of classes that I can not finf. See this post: http://bit.ly/10ntW5q

He uses the following classes: UoMSchedule and Product

UoMSchedule newUnitGroup = new UoMSchedule

Product newProduct1 = new Product

I already have the following using's but no-one contains those classes:

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Sdk.Discovery;
using Microsoft.Crm.Sdk.Messages;

Thanks,

Javier Andres Caceres Alvis