Reorganization of Protein Tyrosine Nitration Pattern Indicates the Relative Tolerance of Brassica napus (L.) over Helianthus annuus (L.) to Combined Heavy Metal Treatment - Feigl Gábor; Czifra Ádám; Molnár Árpád; Bodor Attila; Kovács Etelka; Perei Katalin; Kolbert Zsuzsanna (2020)