Kostianev, S., Marinov, B., Gencova, N., Hodjev, V., Yanev, I. Tidal breathing analysis in school-age children. Comparison with the parameters of forced expiration. Plovdiv: 2004 32-40,.
Kostianev, S., Marinov, B., Gencova, N., Hodjev, V., Yanev, I. Tidal breathing analysis in school-age children. Comparison with the parameters of forced expiration. Plovdiv: 2004 32-40,.
Kostianev, S., Marinov, B., Gencova, N., Hodjev, V., Yanev, I. (2004) Tidal breathing analysis in school-age children. Comparison with the parameters of forced expiration, Plovdiv: 32-40,.
Kostianev, S., Marinov, B., Gencova, N., Hodjev, V., & Yanev, I. (2004). Tidal breathing analysis in school-age children. Comparison with the parameters of forced expiration. Plovdiv: 32-40.
Kostianev S, Marinov B, Gencova N, Hodjev V, Yanev I. Tidal breathing analysis in school-age children. Comparison with the parameters of forced expiration. Plovdiv: 2004. p. 32-40.