4.  Between 1986 and 1987 the applicants took part in the clean-up operation at the Chernobyl nuclear disaster site. They were subsequently registered disabled and became entitled to various social benefits and compensation paid on a regular basis. 5.  Considering these benefits insufficient, the applicants together with other 482 people, sued the Russian Ministry of Finance for additional compensation corresponding to non-pecuniary damage suffered as a result of their participation in the operation. 6.  On different dates in January and April 2011 the Nalchik Town Court of Kabardino-Balkaria (“the Town Court”) allowed their claims in part and awarded each claimant, including the applicants, compensation ranging between 1,100,000 Russian roubles (RUB) and RUB 1,800,000 for non‑pecuniary damage. 7.  No appeals were lodged against these judgments within the statutory ten-day time-limit. The judgments became final. Some judgments in respect of several applicants remained unenforced (see “Enforcement status” in the Appendix). 8.  On different dates in 2012 and 2013 the domestic courts granted the defendant authority’s request to extend the time-limit for appeal essentially on the ground that the defendant authority had not been served with the impugned judgments. Subsequently the regional Supreme Court quashed the judgments delivered in the applicants’ favour on the grounds that they had been based on retrospective application of the law. The applicants were ordered to repay the sums received under the judgments. 9.  The applicants lodged a supervisory review application. There is no indication that they requested the enforcement proceedings to be suspended pending the examination of their supervisory review application. 10.  Between June and August 2013 the Presidium of the regional Supreme Court partially quashed the appeal judgments as regards the applicants’ obligation to reimburse the sums paid.