Kostianev, S., Hodjev, V., Todorov, I., Hristova, A., Mandulova, P., Iluchev, D. A factor analysis of dyspnea indexes and lung function parameters in patients with chronic obstructive pulmonary disease. Plovdiv: 2001 27-31,.
Kostianev, S., Hodjev, V., Todorov, I., Hristova, A., Mandulova, P., Iluchev, D. A factor analysis of dyspnea indexes and lung function parameters in patients with chronic obstructive pulmonary disease. Plovdiv: 2001 27-31,.
Kostianev, S., Hodjev, V., Todorov, I., Hristova, A., Mandulova, P., Iluchev, D. (2001) A factor analysis of dyspnea indexes and lung function parameters in patients with chronic obstructive pulmonary disease, Plovdiv: 27-31,.
Kostianev, S., Hodjev, V., Todorov, I., Hristova, A., Mandulova, P., & Iluchev, D. (2001). A factor analysis of dyspnea indexes and lung function parameters in patients with chronic obstructive pulmonary disease. Plovdiv: 27-31.
Kostianev S, Hodjev V, Todorov I, Hristova A, Mandulova P, Iluchev D. A factor analysis of dyspnea indexes and lung function parameters in patients with chronic obstructive pulmonary disease. Plovdiv: 2001. p. 27-31.