He also coached such accomplished gymnasts as Lavinia Miloșovici, Andreea Răducan, Monica Roșu, Simona Amânar, Gina Gogean, Cătălina Ponor, Sandra Izbașa and Larisa Iordache.

[1] At the same time, he worked as a part-time coach for young girls at the club where he was previously enrolled as a gymnast.

[5] Bellu became a coach of the national team in 1981 after the defection of Márta and Bela Károlyi to the United States.

[1] In early 2005, Bellu and his coaching partner Mariana Bitang resigned their positions with the national team because of a media scandal.

[5] In 2010, the Romanian federation invited Bellu and Bitang to help prepare the national team for the 2012 Olympic Games.