Virginio Cantoni V. Gesu Marco Ferretti Stefano Levialdi Roberto M. Negrini Renato Stefanelli The PAPIA system. 195-217 1991 2 VLSI Signal Processing 4 http://dx.doi.org/10.1007/BF00925466 db/journals/vlsisp/vlsisp2.html#CantoniGFLNS91