@article{JETPL.118.280, title = {Analog of the Sommerfeld Law in Quantum Vacuum}, author = {Volovik, G. E.}, journal = {JETP Lett.}, volume = {118}, issue = {4}, pages = {282}, year = {2023}, doi = {10.1134/S0021364023602208}, url = {http://jetpletters.ru/ps/dx/10.31857/S1234567823160097}, note = {[Pisma v ZhETF 118, 280 (2023)]} }