Complex sentence: Within the project bureau "Arktik", Radojičić and Dejan Miljković designed a new structure, and the interior was designed in cooperation with the architect Ivan Milenković.
Split into simpler sentences: Within the project bureau "Arktik", the architect Zoran Radojičić and Dejan Miljković designed a new structure. The interior was designed in cooperation with the architect Ivan Milenković.