There are records and footage, but considering he died in 1993 in Kazakhstan, you’d probably have to speak Kazakh or Russian to even be able to search them down effectively. It was long enough ago that they might never have been released to the public internet. According to the Wikipedia article they’re kept at Moscow State University. The listed publications might be worth pursuing if you want to investigate it further.
There are records and footage, but considering he died in 1993 in Kazakhstan, you’d probably have to speak Kazakh or Russian to even be able to search them down effectively. It was long enough ago that they might never have been released to the public internet. According to the Wikipedia article they’re kept at Moscow State University. The listed publications might be worth pursuing if you want to investigate it further.