For citations:

Levchenko I.S., Martynov V.V. Biological aspects of spruce bud scale Physokermes piceae (Schrank, 1801) (Hemiptera: Coccidae) in the steppe zone of Ukraine. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2021;(236):25-48. (In Russ.) https://doi.org/10.21266/2079-4304.2021.236.25-48