@incollection{Senn17,
author = {Florian Senn and Issaka Seidu and Young Choon Park},
title = {Constricted Variational Density Functional Theory Approach to the Description of Excited States},
booktitle = {Density Functional Calculations},
publisher = {IntechOpen},
address = {Rijeka},
year = {2017},
editor = {Gang Yang},
chapter = {2},
doi = {10.5772/intechopen.70932},
url = {https://doi.org/10.5772/intechopen.70932}
}