Private Email: pitaevATTgmx.de (replace ATT by @)

Business:

LinkedIn: https://www.linkedin.com/in/npitaev

Twitter: @pitaev

Google+ (not really active): https://google.com/+NikolaiPitaev

Non-profit:

Facebook (not really active): https://www.facebook.com/npitaev

YouTube (hockey videos only): http://youtube.com/c/NikolaiPitaev