SymenohZ. I. (1996). Parasupersymmetric quantum mechanics of arbitrary order with<em class="a-plus-plus">N</em&gt; parasupercharges. Ukrains’kyi Matematychnyi Zhurnal, 48(9), 1291–1294. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/5243