1. Barber, H. N.: The Rate of Movement of Chromosomes on the Spindle I. Chromosoma1 (1939).
2. Belar, K.: Der Formwechsel der Protistenkerne. Erg. Zool.6, 235?652 (1926).
3. Belling, J.: The ultimate chromomeres ofLilium andAloë with regard to the number of genes. Univ. California Publ. Bot.14, 307?318 (1928a).
4. ?: Contraction of chromosomes during maturation divisions inLilium and other plants. Univ. California Publ. Bot.14, 335?343 (1928b).
5. ?: Chromomeres of liliaceous plants. Univ. Califormia Publ. Bot.16, 153?170 (1931).