1.
Shields K. Linguistic typology and the Indo-European sigmatic future . 603. W: Németh M, Podolak B, Urban M, Piwowarczyk DR, red. Essays in the History of Languages and Linguistics: Dedicated to Marek Stachowski on the Occasion of His 60th Birthday. Wydawnictwo Księgarnia Akademicka; 2017. doi:10.12797/9788376388618.36