PACS:75.60.−d, 75.70.-k DOI:10.1070/PU2000v043n03ABEH000700 URL: https://ufn.ru/en/articles/2000/3/f/ 000087162100011 Citation: Gusev S A, Nozdrin Yu N, Sapozhnikov M V, Fraerman A A "Collective effects in artificial two-dimensional lattices of ferromagnetic nanoparticles" Phys. Usp.43 288–291 (2000)