request please help me

[left]salam
http://books.google.com/books?id=haKnNaTF73EC&printsec=frontcover&sig=ACfU3U2MoUYxGITyvud1szmD3mlnlMQ_FQ&source=gbs_similarbooks_r&cad=4_2



peyda kardam. esme ketab

non standard finite difference models of differential equations hast. esme nevisande R.E.Mickens hast va male enteshrate World scientific hast.[left]