@ARTICLE{
author={Ribeiro Celso C,Maniezzo Vittorio,Stutzle Thomas,Blum Christian,Juan Angel A,Ramalhinho Helena,Mladenovic Nenad M,Sifaleras Angelo,Sorensen Kenneth,Souza Marcone JF},
year={2020},
title={Preface to the Special Issue on Matheuristics and Metaheuristics},
journal={INTERNATIONAL TRANSACTIONS IN OPERATIONAL RESEARCH},
volume={27},
number={1},
pages={5-8},
document_type={Editorial Material},
} 

@ARTICLE{
author={Mladenovic Nenad M,Sifaleras Angelo,Sorensen Kenneth},
year={2017},
title={Editorial to the Special Cluster on Variable Neighborhood Search, Variants and Recent Applications},
journal={INTERNATIONAL TRANSACTIONS IN OPERATIONAL RESEARCH},
volume={24},
number={3},
pages={507-508},
document_type={Editorial Material},
}