Ziti With Asparagus, Peas And Lemon Cream

• 3 hearts of bibb
• 1 juice of lemon
• 1/2 unshelled
• 300 ml cream (heavy)
• 180 gr asparagus
• 100 gr ziti
• 100 gr shelled peas (fresh)
• 65 gr butter (unsalted)
• 40 gr parmesan (freshly grated)
• 3 gr lemon rind (finely grated)