This is the 7183rd most frequent Russian word.
валтонен
"Валтонен" is not a standard Russian word; it appears to be a Finnish surname.
Here, 'Валтонен' is used as a personal name, referring to an individual.
Вчера я встретил Валтонена в парке.
Yesterday, I met Valtonen in the park.
In this sentence, 'Валтонена' is used in the possessive form to indicate that the effective work style belongs to Valtonen, showing ownership or relation.
Многие считают, что стиль работы Валтонена очень эффективен.
Many believe that Valtonen's work style is very effective.
Here, 'Валтонену' is used in the dative case, showing the receiver of the action.