Can somebody point me to some intro into this variation? I've heard of it but don't have a clue what it is and google doesn't turn up anything useful. Thanks.

You have to be careful tossing names of variations, especially here since so many people invent/give/rename to suit whimsy.  Can you give a move order.  Obviously if its QGD it starts:

1. d4  d5  2. c4  e6

That's the point, I don't know what move order it is.

Thanks eaglex, those I found. But a Queen's Gambit Declined Alatortsev? I keep seeing it mentioned but I don't have the moves.

I will also note that the Chess.com names in the opening explorer are not necessarily standard outside (or even in) chess.com.

The Alatortsev Variation is 1. d4 d5 2. c4 e6 3. Nc3 Be7. The idea behind this move is to avoid the modern exchange variation. After 4. cxd5 exd5 5. Bf4 there are some independent lines. But after 4. Nf3 black will most likely play 4... Nf6 to reach his qgd-mainline like the Tartakover.