“…Several formulations and approaches for applications in logistics optimization that are based on acyclic layered graphs have been proposed, see, e.g., Abeledo et al (2013) Hansknecht et al (2018) . Further important examples that are typically motivated from (telecommunication) network design include limiting the transmission delay from one or more central sources (e.g., central servers) via hop-constraints ( Botton et al, 2015;De Boeck and Fortz, 2018;Diarrassouba et al, 2016;Gouveia et al, 2014;2011b;Leitner, 2016;Ljubi ć and Gollowitzer, 2013;Pereira and Salles da Cunha, 2018;Sinnl and Ljubi ć, 2016 ), or between all relevant nodes via diameter constraints 2011b ), as well as more general delay or distance constraints from one or multiple central nodes ( Ruthmair and Raidl, 2011;).…”