Не знам как звучи, но бих го написал така:
This problem is mentioned by Gilbert ([цитат]1994), too, since it has been a cause for concern not only for Russian experts. In this connection, other investigators have launched the idea about a new approach to the system depending on ............ .
Ако държиш на страдателния залог, трябва да стане:
In other studies, the idea has been lounched about a new approch...