Ημερολόγιο της/του radekwalkowiak

Short Note of Equisetum arvense. IEA PAPER 2020
https://www.researchgate.net/publication/343994076_Short_Note_of_Equisetum_arvense

Equisetum palustre, IEA Collection of Equisetum 2020
https://www.researchgate.net/publication/344044518_Equisetum_palustre_IEA_2020

Equisetum palustre (ssp./var. polystachyum)
https://www.inaturalist.org/observations/58404843

A new species of leafy calamite stem from the Pennsylvanian (Bolsovian) of the South Wales Coalfield
https://www.researchgate.net/publication/342554303_A_new_species_of_leafy_calamite_stem_from_the_Pennsylvanian_Bolsovian_of_the_South_Wales_Coalfield

The history of herbivory on sphenophytes: a new calamitalean with an insect gall from the Upper Pennsylvanian of Portugal and a review of arthropod herbivory on an ancient lineage
https://www.researchgate.net/publication/338728665_The_history_of_herbivory_on_sphenophytes_a_new_calamitalean_with_an_insect_gall_from_the_Upper_Pennsylvanian_of_Portugal_and_a_review_of_arthropod_herbivory_on_an_ancient_lineage