Maslov, V. P. Complex Markov chains and the Feynman path integral for nonlinear equations. (Kompleksnye markovskie tsepi i kontinual’nyj integral Fejnmana dlya nelinejnykh uravnenij). (Russian) Zbl 0449.35086 Moskva: Izdatel’stvo “Nauka”. 191 p. R. 0.69 (1976). MSC: 35Q99 35-02 35C20 81S40 81Q30 81Q10 PDFBibTeX XML
Godsil, C.; McKay, B. Products of graphs and their spectra. (English) Zbl 0402.05050 Combin. Math. IV, Proc. 4th Aust. Conf., Adelaide 1975, Lect. Notes Math. 560, 61-72 (1976). MSC: 05C50 05C99 PDFBibTeX XML