Arkadii Dragomoshchenko (Аркадий Трофимович Драгомощенко) has passed away; see, for example Jacob Edmon's rememberance at Jacket2.
I still have those Sun & Moon Press volumes, but more recent English translations include Chinese Sun from Ugly Duckling Presse (see their publicity page, or get your copy from Amazon.com or Amazon.co.uk) as well as Dust from Dalkey Archive Press (see their publicity page, or get your copy from Amazon.com or Amazon.co.uk)
See also Shushan Avagyan's Interview with Arkadii Dragomoschenko in Context.
I still have those Sun & Moon Press volumes, but more recent English translations include Chinese Sun from Ugly Duckling Presse (see their publicity page, or get your copy from Amazon.com or Amazon.co.uk) as well as Dust from Dalkey Archive Press (see their publicity page, or get your copy from Amazon.com or Amazon.co.uk)
See also Shushan Avagyan's Interview with Arkadii Dragomoschenko in Context.