The current issue (Oct/Nov) of CBF's publication "fellowship!" is on-line. Take a look at http://thefellowship.info/fellowship! The feature article is on the ministry of Dianne and Shane McNary in Slovakia. It is very informative of the wonderful things God is doing through them among the Romany. There are also two other articles on the Dom Gypsies located in the Middle East and the Banjara Gypsies located in India.
Read the articles and please consider how you might be a part of God's mission among the Roma through praying, giving, and volunteering.