“…Other works under the simultaneous approach include the papers by Isafiade and Fraser (2010), Jiang and Chang (2013), Ahmad et al (2012), Jiang and Chang (2015), Short et al (2016), Kang et al (2016), Isafiade et al (2015), Isafiade and Short (2016), amongst others. Isafiade and Fraser (2010) used a multi-period version of the interval-based mixed integer non-linear (MINLP) superstructure approach, Jiang and Chang (2013) used the time sharing approach which was first presented by Jiang and Chang (2015). In the work of Ahmad et al (2012) a stochastic optimisation approach was used, while in the work of Kang et al (2016), a sub-period approach was adopted.…”