Unifying distribution functions: some lesser known distributions
  We show that there is a way to unify distribution functions that describe simultaneously a signal in space and (spatial) frequency. Probably the most known of them is the Wigner distribution function. Here we show how to unify functions of the Cohen class, Rihacek's complex energy function, Husimi and Glauber-Sudarshan distribution functions. 
J.R. Moya-Cessa, H. Moya-Cessa, L.R. Berriel-Valdos, O.   Aguilar-Loreto, and P. Barberis-Blostein