Case C-74/14: Judgment of the Court (Fifth Chamber) of 21 January 2016 (request for a preliminary ruling from the Lietuvos vyriausiasis administracinis teismas — Lithuania) — ‘Eturas’ UAB and Others v Lietuvos Respublikos konkurencijos taryba (Reference for a preliminary ruling — Competition — Agreements, decisions and concerted practices — Concerted practice — Travel agencies using a common computerised booking system — Automatic restriction of the discount rates available for online bookings — System administrator’s message in relation to that restriction — Tacit agreement capable of being characterised as a concerted practice — Constituent elements of an agreement and of a concerted practice — Assessment of evidence and standard of proof — Procedural autonomy of the Member States — Principle of effectiveness — Presumption of innocence)