• Linear algorithms for recognizing and parsing superpositional graphsPeder, Ahti; Nestra, Härmel; Raik, Jaan; Tombak, Mati; Ubar, Raimund-JohannesFacta Universitatis [Niš]. Series electronics and energetics2011 / p. 325-339 : ill http://dx.doi.org/10.2298/FUEE1103325P