Équation [karta korespondencyjna]

sygnatura <svg :class="{ 'rotate-180': open }" aria-hidden="true" width="12" height="12" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M12 4V20M4 12H20" stroke="#000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">

bibliografia &mdash; publikacje <svg :class="{ 'rotate-180': open }" aria-hidden="true" width="12" height="12" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M12 4V20M4 12H20" stroke="#000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">