Gallbladder polyp in children – a rare finding during ultrasound examination
Yankov, Ivan, Boyanov, Nikola, Aleksova, Lyubka, Ivanov, Biser, Moshekov, Evgeniy, Chatalbashev, Dimitar, Stefanova, Penka
Height–diameter relationship of plantation-grown juvenile black locust trees is differentiated according to their growth rate, which is positively affected by spacing
Stankova, Tatiana, Dimitrova, Proletka, Gyuleva, Veselka, Stefanova, Penka