Impact of water deficit on physiological parameters, bioactive content and antioxidant activity of three olive cultivars, Edziri, H., Jaziri R., Aissaoui F., Verschaeve Luc, Flamini G., Chehab H., Laameri S., Chihaoui B., Mahjoub Z., Sfina H., et al. , South African Journal of Botany, Jan-09-2018, Volume 118, Number 273, (2018)