Chambers Lynda E, Altwegg Res, Barbraud Christophe, Barnard Phoebe, Beaumont Linda J, Crawford Robert J M, Durant Joel M, Hughes Lesley, Keatley Marie R, Low Matt, Morellato Patricia C, Poloczanska Elvira S, Ruoppolo Valeria, Vanstreels Ralph E T, Woehler Eric J, Wolfaardt Anton C, . (2013). Phenological Changes in the Southern Hemisphere. PLoS ONE, 8(10), e75514–.