494. The Court reiterates that, in accordance with its case law, 658 costs and expenses form part of the concept of reparation, because the efforts made by the victims to obtain justice both at the national and international level involve disbursements that must be compensated when the international responsibility of the State is declared in a judgment. Likewise, the Court reiterates that is not sufficient merely to forward probative documents; rather, the parties are required to include arguments that relate the evidence to the facts that they represent and, in the case of alleged financial disbursements, clearly specify the items and their justification. 659 Therefore, the mere forwarding of receipts is not sufficient and the expense vouchers issued by the representative organizations themselves are not sufficient proof of the expenses incurred. 660 495. In the instant case, the Court considers that the costs and expenses arising from the domestic and international proceedings should be proportional to the number of persons represented and declared as victims in this judgment. 496. First, the Court notes that since the international responsibility of the State has not been established to the detriment of the petitioners represented by the common interveners SIPDH, it is not appropriate for this Court to rule on costs and expenses. 661 497. As for the common interveners Factum Consorcio, the Court notes that they proved costs and expenses for: an airline ticket for travel from Argentina to Costa Rica, on August 12, 2017, at a cost of USD $1,044.43, 662 and professional services during the hearing on merits and closing arguments of the lawyer Néstor Morera Víquez, for the sum of USD $5,000.00. 663 They also submitted an invoice for “professional services in the Case of Manfred Amrhein et al.” from the attorney Adrián Alberto Martínez Blanco, for the sum of USD $12,000.00. 664 However, this invoice does not indicate the amount would correspond to professional services provided after the submission of the pleadings and motions brief. Consequently, the Court considers that the State should pay the sum of USD $ 18,044.43 (eighteen thousand and forty-four United States dollars and forty-three cents) in favor of the firm Factum Consorcio for costs and expenses incurred in the domestic proceedings and in the international proceedings before the Inter-American Human Rights System. F. Reimbursement of expenses to the Victims’ Legal Assistance Fund 498. The Inter-American Defenders requested the support of the Victims’ Legal Assistance Fund of the Court to cover their participation in the proceedings, both in the hearing on preliminary objections and in the hearing on the merits. In their pleadings and motions brief, they requested access to the Legal Assistance Fund “both for the exercise of the defense in the inter-American proceedings and in relation to all the expenses required for any activity related thereto. These expenses include the attendance at the hearing before the Cf. Case of Velásquez Rodríguez v. Honduras. Reparations and costs, supra, para. 42, and Case of the Xucuru Indigenous People and its members v. Brazil, supra, para. 214. 659 Cf. Case of Chaparro Álvarez and Lapo Íñiguez v. Ecuador, supra, para. 277, and Case of the Xucuru Indigenous People and its members v. Brazil, supra, para. 215. 660 Cf. Case of Rodríguez Vera et al. (Disappeared of the Palace of Justice) v. Colombia. Preliminary objections, merits, reparations and costs. Judgment of November 14, 2014. Series C No. 287, para. 607, and Case of Vereda La Esperanza v. Colombia, supra, para. 314. 661 Cf. Case of Castillo González et al. v. Venezuela. Merits. Judgment of November 27, 2012. Series C No. 256, fourth operative paragraph. 662 Cf. Reservation of airline tickets Argentina-Costa Rica and Costa Rica-Argentina of Adrián Alberto Martínez Blanco (evidence file, folio 44972). 663 Cf. Invoice for professional services of Néstor Morera Víquez of September 28, 2017 (evidence file, folio 44886). 664 Cf. Invoice for professional services of Adrián Alberto Martínez Blanco, of September 28, 2017 (evidence file, folio 44975). 658 146