Lantos, F., Z. Pék, Z. Monostori, and L. Helyes. “Studies on the Effects of Growing Substrates and Physical Factors in Sweet Pepper Forcing in Context With the Generation of Calcium Deficiency Symptoms”. International Journal of Horticultural Science, vol. 16, no. 2, Mar. 2010, pp. 61-65., doi:10.31421/IJHS/16/2/886.