Complex sentence: As many other Hubay-students neither did Gertler continue his career in Hungary, He settled in Brussels in 1928, with recommendations of his teachers, where he could improve his technique by Eugène Ysaÿe.
Split into simpler sentences: As many other Hubay-students neither did Gertler continue his career in Hungary, He settled in Brussels in 1928, with recommendations of his teachers. In Brussels, he could improve his technique by Eugène Ysaÿe.