# Bulletin of the ICA

## Volume 42, September, 2004

** News**
** Announcements**
** A.K. Kwasniewski**, "Comments on combinatorial interpretation of Fibonacci coefficients - an email style letter", pp. 10-11
** Izak Broere, Michael Dorfling, Wayne Goddard, Johannes H. Hattingh, Michael A. Henning and Elna Ungerer**, "Augmenting Trees to have Two Disjoint Total Dominating Sets", pp. 12-18
** Cristina Jacobs**, "A New Blocking Semioval", pp. 19-24
** Carol Whitehead and Norma Zagaglia Salvi**, "Observability of the Extended Lucas Cubes", pp. 25-36
** Gary Chartrand, Todd Thomas, Ping Zhang and Varaporn Saenpholphat**, "A New Look at Hamilton Walks", pp. 37-52
** Donna Pierce and Michael J. Kallaher**, "A Note on Planar Functions and Their Planes", pp. 53-75
** Ian M. Wanless**, "A partial latin squares problem posed by Blackburn", pp. 76-80
** V. Sitaramaiah and M.V. Subbarao**, "Three Theorems of Sierpinski and Their Unitary Analogues", pp. 81-86
** Patric R.J. Ostergard**, "On the nonexistence of Bent Hamiltonian Paths in the Grid Graph P_{3} x P_{5} x P_{5}", pp. 87-88
** David J. Erwin**, "Dominating broadcasts in graphs", pp. 89-105
** Edward J. Farrell, Michael L. Gargano and L.V. Quintas**, "A Note on the Number of Spanning Trees in Long Linear Polygonal Chains", pp. 106-110
** R.G. Stanton**, "Application of an Empty-Diagonal Square", pp. 111-113
** Bulletin Policy**
** M.L. Aggarwal and Alan C.H. Ling**, "On the existence of balanced n-ary residual treatment-effects designs", pp. 115-118
** Recent Conferences**