How to pronounce Ivan Ivanovich Schmalhausen (Russian/Russia) - PronounceNames.com
How to pronounce Schmalhausen (Russian/Russia) - PronounceNames.com
How to pronounce Ivan Ivanovich Polzunov (Russian/Russia) - PronounceNames.com
How to pronounce Siyankov (Russian/Russia) - PronounceNames.com
How to pronounce Vladimir Lukich Borovikovsky (Russian/Russia) - PronounceNames.com
İvan İvanoviç Şişkin.
List of Russian biologists | Wikipedia audio article