Martin-Gomez, ALevis, DDiaz-Guilera, APagonabarraga, I2018-11-082018-11-082018-11-08201810.1039/c8sm00020dhttps://infoscience.epfl.ch/handle/20.500.14299/149994WOS:000429207100006Collective motion of active Brownian particles with polar alignmenttext::journal::journal article::research article