Mokhoff said uncertainty about when Gazprom would issue ADRs and about whether shares from the Russian market could be converted into ADRs had hurt prices .
<response> <person>Mokhoff</person> said uncertainty about when <organization>Gazprom</organization> would issue <misc>ADRs</misc> and about whether shares from the <misc>Russian</misc> market could be converted into <misc>ADRs</misc> had hurt prices . </response>