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BOTANY
| Authors and title | Pages |
|---|---|
| A. N. Ponomarev, T. P. Turbacheva. Explosive and portionlike flowering of grasses | 1437 |
PLANT PHYSIOLOGY
| Authors and title | Pages |
|---|---|
| A. A. Anisimov, E. K. Fusina, L. A. Dobriákova, E. V. Likhovidova. 24 hour periodicity of assimilate migration | 1441 |
| M. S. Bardinskaia, L. D. Prusakova, T. A. Shubert. Interaction of ferulic acid with gibberelline and indolylacetic acid in the process of growth of plants | 1445 |
| F. D. Skazkin, K. A. Lukomskaia. Formation of female gametophyte in certain grasses in connexion with their development affected by water deficiency | 1449 |
PHYSIOLOGY
| Authors and title | Pages |
|---|---|
| E. B. Babskii, V. S. Sal’manovich, E. A. Donskikh. Physiological mechanisms behind the appearance of alternation of electric and mechanical manifestations of cardiac activity | 1452 |
| V. V. Gerasimov. The dynamics of imitational conditioned reflexes in certain marine fish (the cod, coalfish, haddock) | 1456 |
PARASITOLOGY
| Authors and title | Pages |
|---|---|
| G. Paspalev, V. K. Dokov, E. Chakrov, D. Bozhkov. An unknown disease of Anura recently described in Bulgaria | 1460 |
| I. S. Soldatkin, N. S. Novokreshchenova, Iu. V. Rudenchik, I. B. Ostrovskii, A. I. Levoshina. Application of radioactive carbon to the study of the intensity of filia exchange between Rhombomys opimus and Meriones meridianus | 1462 |
CORRECTION
In my article (V. Ya. Urm, “On necessary and sufficient conditions for the stability of systems of difference equations”), published in DAN, vol. 139, no. 1, 1961, in the formulation of the theorem containing the stability conditions, the point concerning the special form of the triangular matrix \(\bar A_0\) was omitted. In the proof of the theorem one should bear in mind that the eigenvalues \(\lambda_i\) are arranged along the main diagonal of \(\bar A_0\) so that the following scheme is fulfilled:
\[ \begin{gathered} \lambda_1\\ p_{12}\ \lambda_2\\ p_{13}\ p_{23}\ \lambda_3\\ \cdot\quad \cdot\quad \cdot\\ \cdot\quad \cdot\quad \cdot\\ \cdot\quad \cdot\quad \cdot\\ p_{1k}\ p_{2k}\ \cdots\ \lambda_k \end{gathered} \]
\[ p_{ij} \le p_{im}, \quad j > m; \qquad p_{ji} \le p_{mi}, \quad j < m, \]
where the number \(p_{ij}\) is equal to the number of the first common coefficients \(\alpha_k\) in the expansions (7) for the pair of eigenvalues \(\lambda_i\) and \(\lambda_j\).
V. Ya. Urm
T-11889. Signed for printing 17.10.1962. Print run 5525 copies. Order 1081.
Paper format \(70 \times 108^{1}/_{16}\). Printed sheets \(20.45 + 4\) inserts. Paper sheets \(7\frac{1}{2}\). Publisher’s sheets 22.9.
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