## Volume 74 Parts 1, 2 and 3 (2019)

#### Part 1

- Norbert Hegyvári, François Hennecart and Péter Pál Pach
- R. Balakrishnan, P. Paulraja, Wasin So and M. Vinay
- Irith Ben-Arroyo Hartman and Ilan Newman
- Contractors' minimum spanning tree, pp.33–45

- Jaromy Kuhl, Donald McGinn and Michael William Schroeder
- J. Amjadi, M. Chellali, S.M. Sheikholeslami and M. Soroudi
- K. Selvakumar, M. Subajini and M. J. Nikmehr
- L. Beaudou, R.C. Brewster and F. Foucaud
- Michael Engen and Vincent Vatter
- Kenzi Akiyama, Chihiro Suetake and Masaki Tanaka
- Doug J. Decock and Breeann M. Flesch
- Asteroidal-triple-free interval $k$-graphs, pp.161–168

- Toufik Mansour, Matthias Schork and Daniel Yaqubi
- Protected cells in bargraphs, pp.169–178

- Lara Pudwell and Rebecca Smith
- Two-stack-sorting with pop stacks, pp.179–195

- Kazuhiro Suzuki
- $(g,f)$-Chromatic spanning trees and forests , pp.196–209

- Jan-Hendrik de Wiljes
- Weak king embeddings of oriented graphs, pp.210–215

#### Part 2

- Markus Kuba and Alois Panholzer
- Tomáš Madaras and Martina Tamášová
- Tri Lai
- M. D. Francis, C. M. Mynhardt and J. L. Wodlinger
- Seth Chaiken, Christopher R. H. Hanusa and Thomas Zaslavsky
- Maurizio Brunetti, Matteo Cavaleri and Alfredo Donno
- A lexicographic product for signed graphs, pp.332–343

- Adam Mammoliti
- Ira M. Gessel
#### Part 3

- Oliver Krüger
- An invariant for minimum triangle-free graphs, pp.371–388

- Kassie Archer, Adam Gregory, Bryan Pennington and Stephanie Slayden
- Pattern restricted quasi-Stirling permutations, pp.389–407

- Ouail Kitouni and Nathan Reff
- Justin M. Troyka
- On the centrosymmetric permutations in a class, pp.423–442

- S.A. Tapadia, Y.M. Borse and B.N.Waphare
- Majid Hajian, Nader Jafari Rad and Lutz Volkmann
- Mark Budden and Elijah DeJonge
- Neal Bushaw and Daniel W. Cranston
- Donald L. Kreher and Douglas R. Stinson