Reverses, with four hands to play! Larry Cohen on Reverses

NMF - Other Conventional Calls- NMF & 4thSF & 2 level WJS

Another Larry Cohen Article on 4th Suit Forcing with four hands to play 

Finally, though we talked about a simplified version of two-way NMF. Here is a link to a good place to practice one-way NMF (afterall, not everyone plays two-way) NMF @ bakerbridge , the 14 hand quiz is useful.