@Article{DBLP:journals/dam/AbdoDG12,
author = { Hosam Abdo and Darko Dimitrov and Ivan Gutman },
title = { On the Zagreb indices equality },
journal = { Discrete Applied Mathematics },
year = { 2012 },
volume = { 160 },
number = { 1-2 },
pages = { 1-8 },
} @Article{,
author = { Hosam Abdo and Darko Dimitrov and Ivan Gutman },
title = { On the Zagreb Indices Equality },
journal = { CoRR },
year = { 2011 },
volume = { abs/1106.1809v1 },
}