@techreport{puchinger-06a,
 address = {Vienna, Austria},
 author = {Jakob Puchinger and Günther R. Raidl},
 institution = {Institute of Computer Graphics and Algorithms, Vienna University of Technology},
 keywords = {hybrid, mip, packing, vns},
 number = {TR 186--1--06--02},
 title = {Bringing Order into the Neighborhoods: Relaxation Guided Variable Neighborhood Search},
 url = {https://www.ac.tuwien.ac.at/files/pub/puchinger-06a.pdf},
 year = {2006}
}