VIDAKOVIĆ-CIFREK, Željka. Professor Ivan Regula – on the occasion of his ninetieth birthday. Acta Botanica Croatica, [S. l.], v. 85, n. 1, p. 95–96, 2026. Disponível em: https://www.abc.botanic.hr/index.php/abc/article/view/4448. Acesso em: 30 apr. 2026.