Szawaryn, Karol; Szwedo, Jacek (21 May 2018). "Have ladybird beetles and whiteflies co-existed for at least 40 Mya?". PalZ. 92 (4): 593–603. doi:10.1007/s12542-018-0409-5. S2CID90619916.
Szawaryn, Karol (26 March 2019). "Unexpected diversity of whitefly predators in Eocene Baltic amber—new fossil Serangium species (Coleoptera: Coccinellidae)". Zootaxa. 4571 (2): 270. doi:10.11646/zootaxa.4571.2.7. PMID31715820. S2CID109922678.
Szawaryn, Karol; Szwedo, Jacek (21 May 2018). "Have ladybird beetles and whiteflies co-existed for at least 40 Mya?". PalZ. 92 (4): 593–603. doi:10.1007/s12542-018-0409-5. S2CID90619916.
Szawaryn, Karol (26 March 2019). "Unexpected diversity of whitefly predators in Eocene Baltic amber—new fossil Serangium species (Coleoptera: Coccinellidae)". Zootaxa. 4571 (2): 270. doi:10.11646/zootaxa.4571.2.7. PMID31715820. S2CID109922678.