S **CVETKOVI** ´ C The following vector x =(1,λ,λ 2 −1,λ 3 −2λ) T is a λ-eigenvectorof G. Besides the spectrum of the adjacency matrix of a graph G we shall consider

[1]K. Bali nska, D. **Cvetkovi** c, Z. Radosavljevi c, S. Simi c, D. Stevanovi c, A survey on integral graphs, Univ. Beograd, Publ. Elektrotehn. Fak., Ser. Mat., 13 (2002), 42-65.

Ni{ i Vizantija II 53 Vladimir **Cvetkovi**} GOD AND THE WORLD IN THE WORKS OF ST. IRENAEUS OF LYON Irenaeus of Lyon belongs to the group of Christian writers in the early Church known as the apostolic fathers.

524 G.V. Milo vanovi·cand A.S. **Cvetkovi**· c: has singularities depending on t , sand a . This means that our contour should also change with t in order to have the smallest number of function evaluations.

Progress InElectromagnetics Research, Vol. 120,403{421,2011 FETD COMPUTATION OF THE TEMPERATURE DISTRIBUTION INDUCED INTOA HUMAN EYE BY A PULSED LASER M. **Cvetkovi**¶c 1, *, D. Poljak 1, and A. Peratta 2 1 Department of Electronics, University of Split, R. Boskovica 32, Split 21000, Croatia 2 ...

J. Aust. Math. Soc. 84 (2008), 63- 72 doi:10.1017/S144 6788708000207 Re-nnd SOLUTIONS OF THE MATRIX EQUATIONAXB=C DRAGANAS. **CVETKOVI** ´ C-ILI ´ C (Received 22August 2006; revised 28 October 2007) Communicated by J. J. Koliha Abstract In this article we consider Re-nndsolutionsof the equation ...

**Cvetkovi**´c, I. Gutman (II 1981) Anew spectral method for determining the number of spanning trees Publications del'Institut Math ematique (Beograd) 29 (1981) 49-52. 157.

There is a large literature on algebraic aspects of spectral graph theory, well documented in several surveys and books, such as Biggs [26], **Cvetkovi** c, Dooband Sachs[93] (also see[94]) and Seidel[228].

Applications of Graph Spectra: An Introduction to the Literature (D. **Cvetkovi**¶c). This introductory text provides an introduction to the theory of graph spectra andashortsurvey of applications of graph spectra.

We treat two kinds of operation on signed graphs: the Cartesian product (for which we get the strongest results) and the class of generalizations called\NEPS" (or as we prefer\**Cvetkovi** cproducts") introduced by **Cvetkovi** c ([5]), and also the line graphs of signed graphs.