Congressus Numerantium
Volume 231, December, 2018

• LeRoy B. Beasley, "Linear Operators on Graphs: Genus Preservers", pp. 5-13
• Jeff Braun and John C. Wierman, "Symmetric Rendezvous on the Unit Cube", pp. 15-37
• Yunfan Zhao, John C. Wierman and Thomas Marge, "Perfect Domination Ratios of Archimedean Lattices", pp. 39-61
• Gabrielle Moss and John C. Wierman, "Percolation Threshold Bounds for the 2-Uniform (3,4,3,12;3,122) Lattice", pp. 63-76
• Elanor West, Xiao Xie and John C. Wierman, "Rendezvous Search on the Edges of Platonic Solids: Optimal Waiting Probabilites and Multi-Step Strategies", pp. 77-94
• Thomas Marge, Yunfan Zhao and John C. Wierman, "Efficient and Non-Efficient Domination of Archimedean Lattices", pp. 95-108
• Clifton E. Ealy Jr., "On The Loop Cloud of a Group", pp. 109-115
• S. Hedetniemi, S. Holliday and P. Johnson, "Neighborhood Representatives", pp. 117-119
• Andrew Schwartz, "Matchable Trees: Distance Distribution", pp. 121-136
• Keith Driscoll and Elliot Krop, "Some Results Related To The Kulli-Sigarkanti Conjecture", pp. 137-142
• Ebrahim Salehi and Donald McGinn, "On Cordial Sets of Regular Bipartite Graphs", pp. 143-156
• Axel Brandt, Nathan Tenpas and Carl Yerger, "An Alternative Approach for Bounding the Additive Choice Number of Planar Graphs", pp. 157-163
• Allan Bickle, "Collapsible Graphs", pp. 165-172
• Yoshihiro Kaneko, "Axis Shift of mobile in-trees on grid graph structured wireless sensor network", pp. 173-182
• Mariya Belchikova and Darren A. Narayan, "On k-Uniform Edge Betweenness Cenrality Graphs", pp. 183-203
• Thomas Lange , "An FPRAS for k-edge connected unreliability", pp. 205-220
• Todd Fenstermacher, Soumendra Ganguly and Renu Laskar, "Perfect Domination In Knights Graphs", pp. 221-230
• Todd Fenstermacher, Soumendra Ganguly, Stephen Hedetniemi and Renu Laskar, "P-Matchings In Graphs: A Brief Survey With Some Open Problems", pp. 231-238
• R.C. Bunge, M.K. Chwee, A.M. Cooper, S.I. El-Zanati, K.L. Kennedy, D.P. Roberts and C.C. Wilson, "The spectrum for a multigraph on 4 vertices and 7 edges", pp. 239-248
• R.C. Bunge, S.I. El-Zanati, D.J. Gibson, D.P. Roberts, A.L. Sickman, L.A. States and J.T. Ward, "The λ-fold spectrum problem for a multigraph on four vertices and eight edges", pp. 249-257
• Alexis Byers, Stephen Devereaux, Garry L. Johns and Ping Zhang, "A Note on k-Rainbow Connection in Trees", pp. 259-272
• Ian Hart and Ping Zhang, "Results and Open Questions On Majestic t-Tone Colorings of Graphs", pp. 273-290
• Nasreen Almohanna, Drake Olejniczak and Ping Zhang, "Hamiltonian-Connected Graphs With Additional Properties", pp. 291-302
• Mohra Zayed and Ping Zhang, "4-Path Graphs: A Generalization of Line Graphs", pp. 303-317