Please take into account that participants from most countries need a visa to enter Russia. A russian visa is an official permit to enter, pass through, stay in, or live in Russia for a certain period of time. It is a document in the form of an endorsement placed in your passport by a Russian Embassy or Consulate in your country of residence.

Check whether you need a visa to visit Russia or not.
Citizens of the countries listed here may visit Russia without a visa.

If you need a visa, please note:

There are several categories and types of visas depending on the purpose of visit.
To take part in the conference or scientific program organized by the PDMI/EIMI you should obtain an "ordinary humanitarian" visa, as the purpose of your trip will be "scientific-technical relations".

Please, find an example of the Russian visa here.

Visa can be issued by a Russian Consulate only if you have:

a) passport which is valid at least for 6 months after your trip to Russia,

b) two empty pages (without any stamps, messages, etc.) in your passport, facing each other, one of which will be used for your visa to be pasted upon,

c) the original letter of invitation (LOI) issued by the PDMI or by the Russian Federal Migration Service, depending on the agreement on visa entry signed between the Russian Federation and the country of your citizenship.

d) If you plan to apply for a visa in a country that is not the country of your citizenship, you must also have a valid residence permit in the country of residence. Do not forget find out the validity of the residence permit for the visa obtaining purpose in the Russian consulate in advance.

The whole process of obtaining the visa you can find in Step-by-step instruction.

Note also that it may take a long time before you have your visa, so we strongly recommend that you register at least three months in advance. Many useful details can be also found here.