Help me!

Question about model libraries
For my homework i am supposed to make an optimization of agricultural ecomomy by model of Henning T. Sogaard; Claus G. Sorensen who have made "A Model for Optimal Selection of Machinery Sizes within the Farm Machinery System“. My problem is that I can not find a finished model in “Model Libraries” so I can not make my calculation of optimization. During my college education I did not have any touch with programing so I do not understand GAMS. If anyone has more informations about this model, please forward it to me.
Thank you.
Best regards,
Soman